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Course Description: Students will learn addition and subtraction facts to 18. They will learn place value and adding and subtracting tens and ones. They will be introduced to regrouping and carrying. These math facts will be applied toward solving word problems. Students will additionally develop their skills in counting, number comparison, geometry, money, time, measurement, fractions and graphing. Students will practice their skills using worksheets and online games, quizzes and activities.
NEW! Our friends at Puzzlefast have made us our own worksheets to replace all of the worksheets in Math 2. It means, one, we’ll never need to replace a worksheet again, and two, you can print out all of the worksheets for the year at once. Alternatively, you can buy them as a workbook. (Just $4.99!) If you want to go offline, we also now have 180 days of worksheets and a parent’s guide to walk you through teaching your child Math 2.
Learn more about our new math course books.
Print the Worksheets / Buy as a Workbook
Day 1
 Let’s just play some games at the start of our new year and see what you remember! Don’t worry if you don’t remember everything. We’ll learn more about each of these things this year.
 Choose a game from Math 1 – Addition.
 Do you have enough money?
 You don’t need a worksheet today, but here is all of the math worksheets you’ll be using this year. You can save the pdf and print the sheets as you need them or print them all out now and keep them together throughout the year for when you need them. (You could also choose to buy it as a workbook if you don’t want to print.) When you see an *, that’s marking where you’ll use a worksheet. If you already have printed the packet or bought the workbook, there’s nothing more you need to print.
 Play Minus Mission.
 Play fruit fall. Remember bar graphs?
Day 3
 Choose a game from Math 1 – Addition.
 Play cross the river.
Day 4
 Choose a game from Math 1 – Subtraction.
 What time is it?
 Do these addition flashcards.
 Music turtle!
 Play sandwich stacker.
 Open this 100s grid. Splat paint in the 1s column, the first up and down column on the left. Splat 1, then 11, then 21, then 31…all the way down to 91.
 *Now write 201 in the first corner square on the blank grid (Day 6+ worksheet). Now fill in the whole 1s column. Look at the 100 grid. Do you see how the first column all ends in 1? Fill in just that column for the 201300 chart. The first number is 201. The next number is 211. Keep going all the way down. The last number at the bottom should be 291.
 Watch counting by 2s. Type in 20 in the first box on the left. Type in 2 in the second box. Then click on Fast.
 Click on the fish that comes next. 2 is already at the top. You have to count by 2s and click on what comes next, so the first number you have to click on is 4.
 Fill in the 2s column on your 201300 number grid (Day 6+ worksheet). Write 202 next to 201 and then fill in the rest of the column.
 Try counting by 3s.
 Count by 3s. After the cartoon choose 3’s.
 Fill in the 3s column on the 201300 number grid.
 DottoDot count by 5s.
 Which number comes next when counting by fives?
 Color in as you count by 5s on the number grid. Start by coloring in 185 and 190.
 Play this drive and count game. Like sandwich stacker you have to count on from the numbers there.
 Complete the number line. Fill in the numbers counting by tens. 0, 10, …
 Fill in the 10s column on the 201300 number grid. The last number you fill in should be 300.
 Let’s learn a new addition problem. Say it out loud: six plus two equals eight, two plus six equals eight. 6 + 2 = 8, 2 + 6 = 8 What does six plus two equal? Clap the answer. Clap eight times because two plus six equals eight.
 Start a math facts list. Write your new addition problem on your list. Hold onto this to write each new math fact down. You can use it to review and practice.
 Practice. Change the first ten to two. Change the second ten to six. Change the minimum numbers to 2. Do fifteen problems.
 Choose a game from Math 1 – Subtraction.
 Here’s your new problem I want you to remember: six plus three equals nine, three plus six equals nine, 6 + 3 = 9, 3 + 6 = 9 What does six plus three equal? Jump the answer. Jump up and down nine times because six plus three equals nine.
 Add it to your facts list.
 Practice. Change the first ten to six. Change the second ten to three. Change the minimum numbers to 2. Do fifteen problems.
 Ready for a new addition problem? six plus four equals ten, four plus six equals ten, 6 + 4 = 10, 4 + 6 = 10 What does six plus four equal? The same as four plus six! When you add, it doesn’t matter what order the numbers go in. So, what does six plus four equal? Stomp the answer. Stomp ten times because six plus four equals ten.
 Add it to your facts list.
 *Complete the addition worksheet (Day 13 worksheet).
 Choose a game from Math 1 – Subtraction.
 Count to 300 by tens.
 Box one round. Click on Play Now. Choose a character. Click on Play. Decide if the number on the left is greater than, less than or equal to the number on the right.
 Play greater than or less than. Choose numbers to 100. And THEN CHOOSE numbers to 1000. Remember the big end of the symbol > points to the bigger number. The little end of the symbol < points to the smaller number.
 Choose a game from Math 1 – Addition.
 Ready for a new addition problem? six plus five equals eleven, five plus six equals eleven, 6 + 5 = 11, 5 + 6 = 11 What does six plus five equal? The same as five plus six! Say “eleven” eleven times because 6 + 5 = 11!
 Add it to your facts list.
 Practice. Change the first ten to five. Change the second ten to six. Change the minimum numbers from zero to two. Do fifteen problems.
 Choose a game from Math 1 – Subtraction.
 Count by multiples of 2. That’s skip counting by two. It’s also the EVEN numbers! 2, 4, 6, 8,10, 12… The other numbers are the ODD numbers.
 Here is your new addition problem. six plus six equals twelve 6 + 6 = 12 What does six plus six equal? Go tell someone the answer is twelve because six plus six equals twelve.
 Add it to your facts list.
 Practice. Change the first ten to six. Change the second ten to six. Change the minimum numbers from zero to two. Do fifteen problems.
 Here’s an easy one. Compare weights.
Day 18
 Choose a game from Math 1 – Subtraction.
 Ready for a new addition problem? seven plus two equals nine, two plus seven equals nine, 2 + 7 = 9, 7 + 2 = 9 What does seven plus two equal? The same as two plus seven! When you add, it doesn’t matter what order the numbers go in. So, what does seven plus two equal? Stomp the answer. Stomp nine times because seven plus two equals nine.
 Add it to your facts list.
 Greater than or Less than Play at least three times. Remember: the big, open wide side points to the bigger number
Day 19
 Do you remember that 7 + 2 = 9?
 Practice. Change the first ten to six. Change the second ten to six. Change the minimum numbers from zero to two. Do fifteen problems.
 Count to 1000. What is this chart counting by? (answer: 10) Color in the 100s column (100, 200, 300…).
Day 20
 Here’s a new addition problem for you. seven plus three equals ten, three plus seven equals ten, 7 + 3 = 10, 3 + 7 = 10, jump up and down ten times and say, “Seven plus three equals ten.”
 Go tell two other people that 3 + 7 = 10 and 7 + 3 = 10.
 Add it to your facts list.
 Choose a game from Math 1 – Subtraction.
 Choose numbers to 1000. Put them in order.
 Do you remember that 7 + 3 = 10?
 Practice. Change the first ten to 7. Change the second ten to 3. Change the minimum numbers from zero to two. Do twenty problems.
 Count out loud to 10 by ones, to 100 by tens and to 1000 by hundreds.
 Here’s a new math problem for you. seven plus four equals eleven, four plus seven equals eleven, 4 + 7 = 11, 7 + 4 = 11
 Tell everyone in your home right now (who’s not sleeping) that 7 + 4 = 11.
 Add it to your facts list.
 Practice. Change the first ten to seven. Change the second ten to four. Change the minimum numbers from zero to two. Do twenty problems.
 Get out 11 blocks or coins or something. Separate them into two piles with seven in one pile and four in the other. That shows that seven plus four equals eleven. Now move one from the seven pile to the four pile. You should have six in one pile and five in the other. That shows that six plus five equals eleven. Separate the piles into more ways. 9 + 2 = 11, 10 + 1… There are many ways to add up to eleven.
 Play Odd or Even.
 New addition problem? seven plus five equals twelve, five plus seven equals twelve, 7 + 5 = 12, 5 + 7 = 12
 Add it to your facts list.
 Jump up and down 12 times because seven plus five equals twelve.
 Practice. Change the first ten to five. Change the second ten to seven. Change the minimum numbers from zero to two. Do twenty problems.
 Choose a game from Math 1 – Subtraction.
 New addition problem: seven plus six equals thirteen, six plus seven equals thirteen, 6 + 7 = 13, 7 + 6 = 13
 Clap thirteen times, and count out loud while you do, because seven plus six equals thirteen, 7 + 6 = 13.
 Add it to your facts list.
 Practice. Change the first ten to six. Change the second ten to seven. Change the minimum numbers from zero to two. Do twenty problems.
 Organize the numbers odd and even. Choose numbers to 100.
 7 + 7 = 14
 8 + 8 = 16
 9 + 9 = 18
 Do you think you can remember those? Say them out loud a few times.
 Try this doubles game. What is double 2? 2 + 2 = 4 What is double 6? 6 + 6 = 12
 Choose a game from Math 1 – Subtraction.
 Practice. Change the first ten to seven. Change the second ten to seven. Change the minimum numbers from zero to two. Do twenty problems.
 Watch the first six minutes of this video. You don’t have to write. Just watch.
 Let’s look at this chart again. Color in blue the row (acr0ss) and the column (up and down) that have a 3 in every block. Look for the patterns.
 New addition problem! eight plus two equals ten, two plus eight equals ten, 2 + 8 = 10 , 8 + 2 = 10
 What else equals ten? List out loud as many as you can ( 1 + ? = 10 , 2 + ? = 10 , 3 + ? = 10 , 4 + ? = 10 , 5 + ? = 10 ).
 Now tell someone that 8 + 2 = 10. Go and tell them now.
 Add it to your facts list.
 Which number?
 Which number comes before and after?
 New addition problem, ready? eight plus three equals eleven, three plus eight equals eleven, 3 + 8 = 11, 8 + 3 = 11
 Stamp your feet eleven times because 3 + 8 = 11
 Add it to your facts list.
 Choose a game from Math 1 – Subtraction.
 Which number?
 One more this week. eight plus four equals twelve, four plus eight equals twelve, 8 + 4 = 12, 4 + 8 = 12
 Clap the answer. What is eight plus four?
 Add it to your facts list.
 Practice. Change the first ten to eight. Change the second ten to four. Change the minimum numbers from zero to two. Do twenty problems.
 Which is bigger?
 Practice. Change the first ten to four. Change the second ten to eight. Change the minimum numbers from zero to two. Do twenty problems.
 *Do the addition worksheet (Day 30 worksheet).
 Pick a game from the top four (they say “Number Range: You Choose It”) and practice facts 1 – 5.
 Choose a game from Math 1 – Subtraction.
 Reminders: 7 + 5 = 12 , 7 + 6 = 13 , 7 + 7 = 14
 Count by 5. Click on Play. Click on 5.
 New addition fact: 8 + 5 = 13 , 5 + 8 = 13 , eight plus five equals thirteen, five plus eight equals thirteen
 Add it to your addition facts page.
 Practice. Change the first ten to eight and the second ten to five. Change the minimum numbers from zero to two. Do 25 problems.
 “Count by tens to find the right duck.”
 New addition fact: eight plus six equals fourteen, six plus eight equals fourteen, 8 + 6 = 14 , 6 + 8 = 14
 Add it to your addition facts page.
 Go tell someone that six plus eight equals fourteen.
 Practice. Change the first ten to eight and the second ten to six. Change the minimum numbers from zero to two. Do twentyfive problems.
 Count by 10s. Play to 500.
 New addition fact: eight plus seven equals fifteen, seven plus eight equals fifteen, 8 + 7 = 15 , 7 + 8 = 15
 Add it to your addition facts page.
 Wiggle your nose fifteen times because 8 + 7 = 15.
 Practice. Change the first ten to seven and the second ten to eight. Change the minimum numbers from zero to two. Do twenty problems.
 Practice. Change the first and second ten to eight. Change the minimum numbers from zero to two. Do 30 problems.
 Choose a game from Math 1 – Subtraction.
 Play normal level 4.
 Choose a game from Math 1 – Subtraction.
 New addition problem, ready? nine plus two equals eleven , two plus nine equals eleven 9 + 2 = 11 2 + 9 = 11 Say it out loud. How much is nine plus two? Blink the answer. Blink eleven times.
 Write it in your facts list.
 Choose a game from Math 1 – Subtraction.
 You are getting close to knowing all addition problems! You just have to get to 9 + 9 and then you can add anything in the whole world!
 Ready? nine plus three equals twelve , three plus nine equals twelve 9 + 3 = 12 3 + 9 = 12
 What’s 9 + 3? Flap the answer. Flap your arms twelve times because nine plus three equals twelve.
 Go and tell someone that three plus nine equals twelve.
 Write it in your facts list.
 Practice addition. Change the first and second ten to eight. Change the minimum numbers from zero to two. Do 30 problems.
 Choose a game from Math 1 – Subtraction.
 Here’s your addition problem today: nine plus four equals thirteen , four plus nine equals thirteen 9 + 4 = 13 4 + 9 = 13
 Go and tell someone that nine plus four equals thirteen.
 What is four plus nine? Nod the answer. Nod your head thirteen times because four plus nine equals thirteen.
 Write it in your facts list.
 *Do today’s addition worksheet (Day 39 worksheet).
 Choose a game from Math 1 – Subtraction.
 Play around the world in 80 seconds, choose easy.
 Play alien blaster. You still have a handful of addition facts to learn, but you should know almost all of them. You are so close to knowing them all!
 Let’s learn a new math problem. If you learn a problem each day, you can finish with memorizing addition facts this week! nine plus five equals fourteen , five plus nine equals fourteen , 9 + 5 = 14 , 5 + 9 = 14
 Go and tell someone that five plus nine equals fourteen.
 Write it in your facts list.
 What’s nine plus five? Bop your knee fourteen times to show the answer.
 Practice addition. Change the first ten to nine. Change the second ten to five. Change the minimum numbers from zero to two. Do 30 problems.
 Let’s do another math problem. So close! nine plus six equals fifteen , six plus nine equals fifteen , 9 + 6 = 15 , 6 + 9 = 15
 Go and tell someone that nine plus six equals fifteen.
 Write it in your facts list.
 Fake burp fifteen times because six plus nine equals fifteen. (Or, if that’s illegal in your house, sing “la”)
 Practice addition. Change the first ten to six. Change the second ten to nine. Change the minimum numbers from zero to two. Do 30 problems.
 Choose a game from Math 1 – Subtraction.
 Dude’s Dilemma — choose addition, easy
 Let’s do another addition problem. Ready? nine plus seven equals sixteen , seven plus nine equals sixteen , 9 + 7 = 16 , 7 + 9 = 16 Remember to say it out loud.
 Go and tell someone that nine plus seven equals sixteen.
 Write it in your facts list.
 Dance for sixteen seconds because nine plus seven equals sixteen.
 This is the last time you have to use these flashcards! Practice addition. Change the first ten to nine. Change the second ten to seven. Change the minimum numbers from zero to two. Do 30 problems.
 Choose a game from Math 1 – Subtraction.
 Fact Dash choose facts to 20
 Getting so close! nine plus eight equals seventeen , eight plus nine equals seventeen , 9 + 8 = 17 , 8 + 9 = 17
 Go and tell someone that nine plus eight equals seventeen.
 Write it in your facts list.
 Say “yeah!” seventeen times because nine plus eight equals seventeen.
 Feed the penguins. Click on normal level four.
 This is it! The last one! Then you can learn to add billions! But not today :) nine plus nine equals eighteen , 9 + 9 = 18
 That’s it! Tell someone that nine plus nine equals eighteen.
 Write it in your facts list.
 Play fruit shoot. Click on level 2 relaxed mode.
 Do a dance because you know all your math facts. Now you know all the facts you need to know to add 45238972349+234328723592!
 Play with this number line. Put the frog on 10. Hop forward with arrow any number. What number do you land on? What’s the pattern? 10+1 = 11, 10+2 = 12, 10+3 = 13, 10 + 4 = 14, 10 + 5 = 15, 10 + 6 = 16,…
 Play one round of Pretzel Wars.
 Play Minus Mission. Choose 1 to 10. You have to type 10 in the second box. It’s a little tricky, but keep trying and it will let you type it.
 Go fishing.
 Play Facts Dash. Choose facts up to 20.
 Play Can You Dig It?
 Play Cone Crazy. Choose medium. First answer the question on the bottom scoop of ice cream.
 Choose a game from Math 1 – Subtraction.
 Watch this lesson on place value.
 Choose a game from Math 2 — Addition!
 Go here and make numbers using blocks. Click on Manipulatives and choose “base ten blocks.”
 First make 6 by clicking six times on the one single block.
 Then make 26 by clicking two times on the stack of ten blocks.
 Drag everything off the page or click on clear objects (on the bottom).
 Then make 54 by clicking five times on the stack of ten blocks and four times on the one block.
 Make any number you like under 100 and show it to someone. Explain what number it is. Have them check to see if you are right.
 If you want to play now, the squares are 100 blocks. The big cubes are 1000 blocks! So 2 cubes and 3 squares would be 2,300!
 Choose a game from Math 1 – Subtraction.
 *Fill in the worksheet on tens and ones (Day 53 worksheet).
 Choose a game from Math 2 — Addition!
 Try this place value game. Each stack of blue blocks is 10. If there is one stack, that’s 10. If there are two stacks, that’s twenty. Then count on the red blocks. Click on the number of blocks. If you are wrong, the shark will take a bite. If you are right, a dolphin will jump.
 Choose a game from Math 1 – Subtraction.
 Try this place value game. Make the number by click on the tens and then the ones. Give it a try.
 Choose a game from Math 2 — Addition!
 Play this place value game.
 Choose a game from Math 1 – Subtraction.
 Take a place value test. Type in the number. If the number is 72, then there are 7 tens and 2 ones, 7 ten block stacks and 2 single blocks.
 Choose a game from Math 2 — Addition!
 Click on 2D shapes. Read the page and then click on next. Do you know all of those shapes?
 *Print out the shapes (Day 58 worksheet). Cut out what shapes you like and make a picture. Show your picture to a parent and tell the name of each shape on your page.
 Choose a game from Math 1 – Subtraction.
 Click on 3D shapes. Find cube, cuboid, prism, pyramid, sphere, cylinder and cone. You don’t have to learn the rest now, but you could if you want to.
 Find the shapes.
 Choose a game from Math 1 – Subtraction.
 Play Brainy Numbers. Click on blocks that add up to the number. Choose classic.
 Follow the directions on the screen. Then find shape sort. Click on two shapes and they swap positions. Your goal is to line up three shapes with the same number of sides.
 We are going to start focusing on learning the rest of our subtraction facts.
 *Print out the seven pages for fact families (Day 61+ worksheets).
 Let’s fill in these two fact families: 2 + 6 = 8 and 3 + 6 = 9
 The eight and the nine go in the top circles.
 Write out the two subtraction facts that go with each of those addition facts. You can write them right on the fact family paper.
 Here’s an example. 3 + 4 = 7 so 7 – 3 = 4 and 7 – 4 = 3
 Choose a game from Math 1 – Subtraction.
 Today fill in another fact family page. 4 + 6 = 10 and 5 + 6 = 11
 Write the two subtraction facts that go with each of those addition facts.
 Choose a game from Math 2 — Addition!
 *Print and complete the subtraction worksheet (Day 63 worksheet).
 Read the story and complete the activities about 2D and 3D shapes.
 Choose a game from Math 2 — Addition!
 Fill in another fact family page. Fill it in for 6 + 7 = 13 and 6 + 8 = 14.
 Follow the directions on the screen and then find and click on the seesaw. It should say, “Place Value.”
 Fill in another fact family page. Fill it in for 6 + 9 = 15 and 7 + 2 = 9.
 Fill in a fact family page for 7 + 3 = 10 and 7 + 4 = 11.
 *Print and complete th subtraction puzzle worksheet (Day 66 worksheet). Use your fact family sheets to help you.
 Fill in a fact family page for 7 + 5 = 12 and 7 + 8 = 15.
 Choose a game from Math 2 — Addition!
 Read out loud all of the subtraction problems from your fact family pages. For example: thirteen minus six equals seven, thirteen minus seven equals six…
 Choose a game from Math 1 – Subtraction.
 Fill in a fact family page for 7 + 9 = 16 and 7 + 7 = 14.
 Choose a game from Math 2 — Addition!
 Fill in a fact family page for 8 + 2 = 10 and 8 + 3 = 11.
 Choose a game from Math 1 – Subtraction.
 Fill in a fact family page for 8 + 4 = 12 and 8 + 5 = 13.
 *Print and complete the subtraction crossword (Day 71 worksheet). Use your fact family pages to help you.
 Fill in a fact family page for 9 + 2 = 11 and 9 + 3 = 12.
 Choose a game from Math 2 — Addition!
 Read your fact family pages, but do it like this. Say, “Fifteen minus seven is,” and then jump eight times. Jump, stomp, clap, wiggle, blink, do push ups, turn in circles, etc. for all of the answers. Don’t cheat. Do them all!
 Fill in a fact family page for 9 + 4 = 13 and 9 + 5 = 14.
 Choose a game from Math 2 — Addition!
 Fill in a fact family page for 8 + 8 = 16 and 8 + 9 = 17
 Choose a game from Math 1 – Subtraction.
 Here are your last facts! Then you can add and subtract anything in the world! You will be amazing! Ready?
 Fill in a fact family page for 6 + 6 = 12 and 9 + 9 = 18.
Day 77
 Choose a game from Math 2 — Addition!
 Choose a game from Math 2 — Subtraction!
Day 78*
 *Make some 3D shapes (Day 78 worksheets). Start with the cube and then decide if you’d like to make some more.
 Choose a game from Math 2 — Subtraction!
Day 79
 Do you remember the names of the shapes?
 Choose a game from Math 2 — Subtraction!
Day 80
 Play pretzel wars.
 If you want more flashcardlike practice on your addition and subtraction to know them really well and quickly, go to Xtramath.org.
Word Problems
Day 81
 We’re going to start solving problems with our math facts. We’ll keep playing games too, so we don’t forget the facts!
 We’re going to figure out the problems together at first.
 Let me give you an example of what a Word Problem is. Usually you do your math like this: 6 + 4 = ? Let’s make that into a word problem.
 Let’s say you have six people in your family. Another family with four people in it come over for dinner. How many people will be sitting at the table?
 That’s a word problem. You need to figure out the answer, so you know how many chairs and plates you’ll need to set up.
 How do you figure it out? You have 6 people plus 4 more come. That’s 6 plus 4. 6 + 4 = 10 That’s your answer.
 Now your turn. Here’s the word problem.
 Ned rode his bike 7 miles to the library.
He took a shortcut on the way home which was only 5 miles long.
How many miles did Ned ride altogether?  I’m going to give you a hint. When a problem says altogether, you are going to add to find your answer. Before we add, let’s start with a picture.
 Take a piece of paper. Draw Ned on one side. Draw a library on the other side (it can just be a square.) Put your finger on Ned. Your finger is Ned. Now move your finger up and over and to the library. How far did Ned go so far? How many miles? Read the problem to find out. (answer: 7 miles) Write the number on the paper.
 Now move your finger straight back home. How far did Ned go to get back home? Look at the problem and find the number. (answer: 5 miles)
 Leave a space next to the seven and then write the number.
 Now let’s do it altogether. Put your finger on Ned. Go 7 miles to the library and 5 miles back home. How far did Ned go altogether?
 He went 7 miles plus 5 miles more. Write a plus sign between the 7 and the 5.
 What’s the answer? Go type it in and click on Check. Then click on Show Answer.
 Now, he didn’t go 12 centimeters or 12 feet. He went 12 miles. In a word problem it is VERY important to label your answer, write the word that you are talking about (like miles for this problem).
 You solved your first word problem. Way to go! Now you can play a game.
 Ned rode his bike 7 miles to the library.
 Choose a game from Math 2 — Addition!
Day 82
 Here’s your new word problem.
 Anne ate 6 cookies.
Samantha ate 4 more cookies than Anne.
How many cookies did Samantha eat?  Draw a picture or use legos as cookies. You need 6 cookies. Draw 6 cookies or lay out 6 “cookies.”
 Who ate that many cookies? (answer: Anne)
 Who ate the most cookies? Read the problem carefully to find the answer. (answer: Samantha)
 The problem tells us that Samantha ate more cookies than Anne.
 How many cookies did Samantha eat? How do we figure it out. We know she ate 6 cookies, just like Anne, but then she ate more. How many more? (answer: 4 more)
 Add 4 more cookies to your drawing or lego collection.
 How many cookies did Samantha eat? Write the number equation. That means write the problem with numbers and no words. (answer: 6 + 4 =)
 Type in your answer and check it. Type in the number and the label, the word you are talking about (cookies this time). First you will have to click on the arrow to change it to the second problem (2/5). That means second out of five problems.
 Is this what you wrote? (answer: 10 cookies)
 Anne ate 6 cookies.
 Choose a game from Math 2 — Subtraction!
Day 83
 Here’s your next word problem.
 Henry gave 5 stickers to his younger brother.
Now he only has 9 stickers.
How many stickers did Henry have at first?
 Henry gave 5 stickers to his younger brother.
 What should do first? Let’s draw a picture.
 Draw two people. Draw one stick person on one side of the page and another stick person on the other side of the page.
 Draw 5 stickers under one and 9 stickers under the other.
 How many stickers does Henry have now? (answer: 9 stickers)
 Before he had those nine stickers plus all of the stickers he gave his brother. Write this word problem as an equation, as a number problem. Don’t look at the answer until you’ve written the problem with numbers instead of words. (answer: 9 + 5 = )
 How many stickers did Henry have at first, before he gave any away? Click on the arrow to find the third problem (3/5) and then enter your answer with a number and a word label. The word label for this problem is stickers.
 Were you right? (Did you answer 14 stickers?)
 Choose a game from Math 2 — Addition!
Day 84
 Here’s your next word problem.
 Derek and Larry have 15 books together.
6 of the books belong to Derek.
How many books does Larry have?
 Derek and Larry have 15 books together.
 What do we do first? (answer: Draw a picture.)
 Draw a picture of 15 books. (You can just make a line for each book. It doesn’t have to be a pretty picture.) Or, you can get out 15 legos and pretend they are the books.
 Your fifteen books are Derek’s and Larry’s. Right now they are all together in one big pile.
 Now, look at the problem. How many of the books are Derek’s? (answer: 6 books)
 Count out six legos and put them in a separate pile. Or, circle six books in your picture. Those are the ones that belong to Derek.
 Who do the rest of the books belong to? (answer: Larry)
 So, how many books does Larry have? Count them up. That’s the answer.
 But how do we get that with a number problem. What kind of problem is it when you have a lot and then take some away? Is it an addition problem or a subtraction problem? (answer: subtraction)
 Write this word problem as a number problem. Write the equation. Don’t look until you wrote it down. (answer: 15 – 6 = )
 How many books does Larry have? Click on the arrow to find the fourth problem (4/5) and then enter your answer with a number and a word label. What’s the word label for this problem? (answer: books)
 Were you right? Did you write 9 books?
 Choose a game from Math 2 — Subtraction!
Day 85
 Ready for your next word problem?
 Angela had 8 computer games.
She got 3 more for her birthday.
How many computer games did Angela have then?
 Angela had 8 computer games.
 What do you do first? (answer: Draw a picture.)
 Think about the different parts of the picture and what they are. (Games before, games for her birthday, games she had altogether after her birthday)
 Write the equation. Write the word problem as a number problem.
 How many games did Angela have after her birthday? Click on the arrow to find the fifth problem (5/5) and then enter your answer with a number and a word label.
 Did you get it right? Click on Show Answer to see if you got the word label correct.
 Choose a game from Math 2 — Addition!
Day 86
 15 children watched the circus.
8 children were holding banners.
How many children were not holding banners?
 What do you do first? (answer: Draw a picture.)
 Think about the different parts of the picture and what they are. (all of the kids at the circus, kids holding banners, kids not holding banners)
 Write the equation. Write the word problem as a number problem. (Did you write: 15 – 8 =)
 How many children were not holding banners? Enter your answer with a number and a word label.
 Did you get it right? Click on Show Answer to see if you got the word label correct.
 Choose a game from Math 2 — Subtraction!
Day 87
 A clown juggled 7 red balls.
Another clown tossed him 5 more balls.
How many balls was the clown juggling then?
 What do you do first? (answer: Draw a picture. You might want to color 7 balls red and the other 5 balls another color.)
 Think about the different parts of the picture and what they are. (red balls, 5 more balls, all of the balls)
 Write the equation. Write the word problem as a number problem. Is it addition or subtraction? Did the clown add more balls or take away balls?
 How many balls did the clown juggle altogether? Click on the arrow to find the second problem (2/5) and then enter your answer with a number and a word label.
 Did you get it right? Click on Show Answer to see if you got the word label correct.
 Choose a game from Math 2 — Addition!
Day 88
 11 clowns were wearing polka dot pants.
5 clowns were wearing striped pants.
How many more clowns were wearing polka dot pants?
 What do you do first? (answer: Draw a picture. Draw the striped pants right underneath the polka dot pants.)
 This problem is different than others you have done. It asks, “How many more clowns were wearing polka dot pants?” It’s asking what’s the difference between the number of polka dot clowns and the number of striped clowns.
 Look at the picture. Draw a line from each striped pants to a polka dot pants. How many polka dot pants extra are there? How many don’t have matches? That’s how many more there are. How many? (answer: 6 clowns)
 How do we write that with numbers as an equation? Is it addition or subtraction? Write the equation before you peek at the answer. (answer: 11 – 5 = 6)
 We use subtraction to find the difference between the number of things.
 Click on the arrow to find the third problem (3/5) and then enter your answer with a number and a word label.
 Did you get it right? Click on Show Answer to see if you got the word label correct.
 Choose a game from Math 2 — Subtraction!
Day 89
 How many elephants were still in the ring?
 14 elephants entered the ring for the first show.
 After the show, 6 elephants left.
 What do you do first? (answer: Draw a picture.)
 Think about the different parts of the picture and what they are. (elephants at the first show, you could circle the elephants that left, and the rest are the elephants still there)
 Write the equation. Write the word problem as a number problem.
 How many elephants were still in the ring? Click on the arrow to find the fourth problem (4/5) and then enter your answer with a number and a word label.
 Did you get it right? Click on Show Answer to see if you got the word label correct.
 Choose a game from Math 2 — Addition!
Day 90
 7 children jumped up and cheered for the clowns.
5 more children joined them.
How many children were cheering then?
 What do you do first? (answer: Draw a picture.)
 Think about the different parts of the picture and what they are. (children cheering, more children, children altogether)
 Write the equation. Write the word problem as a number problem.
 How many children were cheering altogether? Click on the arrow to find the fifth problem (5/5) and then enter your answer with a number and a word label.
 Did you get it right? Click on Show Answer to see if you got the word label correct.
 Choose a game from Math 2 — Subtraction!
Money
Day 91
 Do this lesson on coins. This is American money, but the adding together of coins worth 1, 5, 10, 25, etc. is useful in lots of currencies.
 Choose a game from Math 2 — Addition!
Day 92*
 *You may find it helpful to use a chart to help you count coins, especially when adding on tens. Use it if it helps you. Try it today (Day 92 worksheet).
 Count by tens. Then count by fives. Then count by ones.
 Counting by tens: 10, 20, 30, 40, 50
 Counting by fives: 5, 10, 15, 20, 25
 Counting by ones: 1, 2, 3, 4, 5
 This is how you put them together. Count 2 dimes, 3 nickels and 4 pennies.
 Counting 2 dimes: 10, 20
 Count ON 3 nickles: 25, 30, 35
 Count ON 4 pennies: 36, 37, 38, 39
 Count by tens. Then count by fives. Then count by ones.
 Try counting more coins.
 Choose a game from Math 2 — Subtraction!
Day 93
 Match the money.
 A quarter is 25 cents.
 25, 50, 75, 100
 100 cents in one dollar.
 Choose a game from Math 2 — Addition!
Day 94
 Make the total amount.
 Choose a game from Math 2 — Subtraction!
Day 95*
 Gather up a handful of coins. If you don’t have American coins, lay the coin with same number on it over the American coin.
 *Print out the chart, (Day 95 worksheet).
 Organize your coins into piles. Count up all your quarters (or 25) coins. Write the number you have on the chart. Now count by 25s and figure out how much money those coins are worth. Write it on the chart. Do that for all of your coins.
 Choose a game from Math 2 — Addition!
Day 96
 Which coin?
 Choose a game from Math 2 — Subtraction!
 If you are getting the answers wrong, don’t get frustrated. Go to Xtramath.org each day until you know them all quick. Then you can win all of the games! It will take you through addition and subtraction until you know them all correctly and quickly.
Day 97
 Click on level 1 and beginner.
 Choose a game from Math 2 — Addition!
Day 98
 Play spending spree.
 Choose a game from Math 2 — Subtraction!
Day 99
 Read Too Much Noise. Answer the questions and click on the arrows to move ahead.
 In this story it uses a fifty cents coin. You don’t see these often. This is what it looks like. It’s just like having two quarters.
 This story asks you to find the fewest coins needed. Start with the coin worth the most. If you can use it without having too much money, choose it. Choose the most of that coin you can use without having too much money. Then you move to the next coin worth the most.
 Choose a game from Math 2 — Addition!
Day 100
 Click on level 1 and expert. Use the least amount of coins.
 Choose a game from Math 2 — Subtraction!
More Word Problems
Day 101
 Richard has $6. Scott has $8 more than Richard. How much money does Scott have?
 Do you remember the first step? (answer: Draw a picture. You don’t have to draw Richard and Scott. Draw six dollars or just draw six lines to be your six dollars. Then add 8 more for Scott.)
 Label your drawing. Which are how many Richard has? Which are how many Scott has?
 Does Scott have $8? (answer: No. Scott has 8 MORE dollars.)
 Write your equation. Write the problem with numbers instead of words.
 How much money does Scott have? Enter your answer with a number and a label.
 Did you get it write? Click on Show Answer to see if you got the label correct.
 Choose a game from Math 2 — Addition!
Day 102
 Do the second word problem. Use the arrow to find 2/5.
 It says, “Altogether,” which is a clue to add.
 Draw a picture. What in the picture shows the answer?
 Write an equation.
 Answer the question and check your answer.
 Choose a game from Math 2 — Subtraction!
Day 103
 Do the third word problem. Use the arrow to find 3/5.
 It says, “less,” which is a clue to subtract.
 Draw a picture. What in the picture shows the answer?
 Write an equation.
 Answer the question and check your answer.
 Choose a game from Math 2 — Addition!
Day 104
 Do the fourth word problem. Use the arrow to find 4/5.
 In this one you are comparing what two people have. If you had 1 cookie and your brother had three cookies, how many more cookies did your brother have than you? Did you subtract or add to find the answer?
 Draw a picture. What in the picture shows the answer?
 Write an equation.
 Answer the question and check your answer.
 Choose a game from Math 2 — Subtraction!
Day 105
 Do the fifth word problem. Use the arrow to find 5/5.
 No hints this time.
 Did you get it right?
 Choose a game from Math 2 — Addition!
More Money
Day 106
 We’re going to keep working on money. We’re going to use more money this time. One hundred cents is one dollar.
 100 pennies are worth 1 dollar
 20 nickles are worth 1 dollar — 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100
 10 dimes are worth 1 dollar — 10, 20, 30, 40, 50, 60, 70, 80 90, 100
 4 quarters are worth 1 dollar — 25, 50, 75, 100
 5 dollar bills are worth the same amount of money as one 5 dollar bill.
 Two five dollar bills are worth the same amount of money as one ten dollar bill. Right? 5 + 5 = 10 so $5 + $5 = $10
 Try level 2 Beginner first. You can try Expert after if you like.
 Choose a game from Math 2 — Subtraction!
Day 107
 Count the coins into the cup.
 Choose a game from Math 2 — Addition!
Day 108
 Play this money game. Click on “already played” and then choose “Count off.” You can start with easy and work your way up to hard.
 Choose a game from Math 2 — Subtraction!
Day 109
 Ask your parents for all of their money! Count their bills and count their coins. Have someone check to see if you are right.
 Choose a game from Math 2 — Addition!
Money Word Problems
Day 110
 Play level 3. Play beginner. This counts up lots of money. $10 + $10 = $20 right? You can do it!
 Choose a game from Math 2 — Subtraction!
Day 111
 Do these money word problems. You can do it!
Day 112*
 *Complete the money word problems (Day 112 worksheet).
Day 113*
 *Try these harder money word problems (Day 113 worksheet). You can do it. Draw a picture or get out coins and count them up!
Day 114
 More money word problems.
Day 115
 Choose a game from Math 2 — Subtraction!
 Choose a game from Math 2 — Addition!
Time
Day 116
 Do you remember how to tell time? Do you remember the hour hand is the short one and the minute hand is the long one? Do you remember that when the hour hand points to the three and the minute hand points to the twelve we say, “Three o’clock.”
 Let’s see if you remember. Play this quick game.
 Now look at these clocks. The minute hands are all pointing to the six. That means “thirty minutes.”
 Find the right time.
 Choose a game from Math 2 — Subtraction!
Day 117
 Remember how to count by fives? Watch the video.
 Now look at this clock face. Each of those big numbers stands for an hour. If the hour hand is pointing to the two. It is two o’clock. If it is after the two (but not to the 3 yet) then it is 2 and some minutes. Let’s figure out how many minutes.
 Point to each number as you count by fives. Point to the 1 and say “five.” Point to the 2 and say “ten.” It takes five minutes for the minute hand to move from one number to the next, so we count by fives when we are counting minutes. Count by fives all the way around the clock. When you get to the 11 you should be at 55 minutes. Did you count correctly?
 Now count around the clock again!
 Choose a game form Math 2 — Addition!
Day 118
 Do you remember how to count the minutes by five? Here’s the clock if you want to practice it again.
 See if you can find the time. Remember that the hour is the number the hour hand comes AFTER. Choose slow clocks under relaxed mode. Use the circle guide above the clock to shoot the correct time.
 Choose a game from Math 2 — Subtraction!
Day 119
 Match the times to the clocks.
 Choose a game form Math 2 — Addition!
Day 120
 Do you think you got it? Take a quiz.
 Choose a game from Math 2 — Subtraction!
Day 121* (Portfolio time if you are making one. You could save one of the worksheets from this week.)
 Match the times.
 *Draw the hands on the clock to show the time (Day 121 worksheet).
 Ask someone older to check it for you.
Day 122*
 *Print out the clocks (Day 122 worksheet). Follow my directions below.
 Write down on the blank the time on the first clock.
 Read the word problem and then write how many hours you need to add or subtract.
 Now take your finger and point to the hour hand on the first clock.
 Pointing to each hour, count up or down according to what the problem is. The minutes do not change.
 Write the new time in the answer blank and draw the new time.
 Have someone check your answers when you are done.
 Choose a game form Math 2 — Addition!
Day 123
 Play this time telling word problem game. If you lose, play again.
Day 124(*)
 (*)You are going to need to sit with someone who can tell time for this. Read the time on each clock. The short hand is the minute hand. Then say what time it is going to be in five minutes. If you want to play it as a game, print it out and use dice. (Day 124 worksheet)
 Choose a game from Math 2 — Subtraction!
Day 125*
 *Read the questions and draw in the hands on the blank clocks (Day 125 worksheet).
 Have someone check your work when you are done.
 Choose a game form Math 2 — Addition!
Day 126
 Do all five word problems. Use the arrow to move to the next problem after you check your answer. Draw pictures to help you. Write the number equation. Write the label with your number answer.
Day 127
 Count to 100 dollars. You can use beginner.
 Then do level 1, expert. Expert means you have to use the fewest number of coins. To count to 30 cents you would use a quarter and a nickle, not three dimes. Give it a try. Do your best.
 Math 2 — Subtraction!
Graphs
Day 128
 Read and learn about bar graphs.
 Choose a game form Math 2 — Addition!
Day 129
 Read bar graphs.
 Math 2 — Subtraction!
Day 130
 Now build bar graphs.
 Choose a game form Math 2 — Addition!
Day 131*
 *Use the information at the top of the page to fill in the bar graph (Day 131 worksheet).
 First look at the information. What is this graph about?
 If snake were on there and it got 4 votes, you would find snake along the bottom and color in four blocks above it.
 Fill in the bar graph to show how many times each animal was voted as someone’s favorite.
 Then answer the questions about the graph.
 Math 2 — Subtraction!
Day 132
 Read this story about pictographs.
 Choose a game form Math 2 — Addition!
Day 133
 Make a pictograph. Don’t be confused by everything it says. Where it says choose a picture and a color, you can choose a picture and a color using the drop down menu.
 Don’t change anything else.
 In the top line of the graph, write “Number of _________.” The blank is whatever picture you chose: car, flower, boat…
 In the first box under description, write the color you chose.
 Now click on the graph and watch the pictures show up. Decide how many there should be.
 Now choose another color.
 Write that color in the next description box.
 Click on the graph and decide how many there should be.
 Do the same thing with different colors and fill in the graph.
 Call someone over and tell them what your graph shows.
 Math 2 — Subtraction!
Day 134
 You are going to have to find “Connecting Cubes”, to do this you have to click on manipuatives and then select “connecting cubes”. Then drag a green block onto the white part of the screen, your workmat. Drag another out. Move it so that it connects to the other. Build a row of green blocks.
 Now build a row of purple blocks.
 Do it again with red and yellow. Don’t make them all the same length.
 Now, DON’T CLOSE YOUR WINDOW
 Click on this link to make a circle graph or pie chart.
 You are going to use your data that you created with your connecting blocks. (If it’s not already there, click on the Data tab.)
 You will create four slices, one for each color. Change the colors to match the colors of your blocks.
 Write the color name in as the “Item Label” for each color.
 Enter the number of blocks of each color for its “Value.”
 Click on the Preview tab.
 What do you see?
 According to your circle graph, which color do you use the most?
 According to your circle graph, which color did you use the least?
 Choose a game form Math 2 — Addition!
Day 135*
 *Make your own bar graph (Day 135 worksheet).
 Decide what it is going to show. (What vegetables and how many of each are in your house? You can decide. )
 Write a title at the top.
 Label the side–it will be the number of whatever you are counting.
 Label the bottom — it will be the things you are counting.
 Fill in the blocks.
 Explain to someone what your graph shows.
 Math 2 — Subtraction!
Fractions
Day 136
 Read the fraction story and answer the questions.
 Design a flag that is half white and half filled with color. Have someone older check your picture.
 Choose a game form Math 2 — Addition!
Day 137
 Read about 1/4, 1/2 and 3/4 and then scroll down and click on start and do the exercise.
 Design a flag that is one quarter (1/4) white and three quarters (3/4) filled in with color. Have someone older check your picture.
 Math 2 — Subtraction!
Day 138
 Read the fraction story and answer the questions.
 Design a flag that is one third (1/3) white and two thirds (2/3) filled in with color. Have someone older check your flag.
 Choose a game form Math 2 — Addition!
Day 139
Day 140
 Cross the River.
 Choose a game form Math 2 — Addition!
Day 141*
 *Complete the fraction worksheet (Day 141 worksheet). The first answer is three fifths, 3/5 , because three of the five fish are shaded in (dark colored).
 Math 2 — Subtraction!
Day 142
 Match the fractions. The bottom number is how many pieces are in the pie. The top number is how many are shaded in (the white pieces).
 Choose a game form Math 2 — Addition!
Day 143*
 *Complete the fraction worksheet (Day 143 worksheet).
 Math 2 — Subtraction!
Day 144
 Match the fractions with their names. (four fifths is 4/5)
 Choose a game form Math 2 — Addition!
Day 145*
 *Complete the fraction worksheet for today (Day 145 worksheet).
 Choose a game from Math 2 — Subtraction!
Measurements
Day 146
 Read the centimeter ruler. Only whole centimeters are marked. You are measuring the red line.
 This ruler looks different. It’s is still a centimeter ruler. The centimeters are marked with a longer line and the number to the left of it. In the middle of each centimeter is a shorter line. That’s halfway between. That’s a half a centimeter from the last marker. If the red line stops at a middle line, then the length is the number of centimeters before it plus one half. If the red line stopped at a half a centimeter more than three, then the answer would be 3.50 . (It’s kind of like $0.50 is halfway to a dollar. $3.50 is halfway between $3 and $4.)
 Choose a game form Math 2 — Addition!
Day 147
 Now let’s try it with an inch ruler. Measure the red line.
 Now try the harder version! Look carefully at this inch ruler. Each inch has 4 lines. The inch marker has the longest line with the number next to it on the left. The middle line is the next longest. That marks half an inch. The other two lines on either side mark a quarter of an inch, 1 out of 4 parts of the inch or 1/4th, or one quarter. If the red line stops at the third line on the inch, then that is 3/4 ths of an inch. Give it a try.
 Choose a game from Math 2 — Subtraction!
Day 148
 Measure how far ant needs to go to get to his picnic. Click on the circles. Then use the ruler (you can turn it sideways) to measure how far he needs to go. Enter the number and click on go.
 Choose a game form Math 2 — Addition!
Day 149
 Now you are going to read a different kind of ruler, a thermometer.
 This is a Fahrenheit thermometer. In America we mostly measure lengths by inches and temperature by degrees Fahrenheit. The rest of the world measures length by centimeters and degrees by Celsius. On the thermometer the lines that go all the way across are counting by tens. Those lines are numbered. The half lines in between are counting by fives. So the line half way between 10 and 20 is 15. Click on the right answer and choose submit.
 Choose a game from Math 2 — Subtraction!
Day 150
 You saw this in level 1. Do you remember this thermometer? Slide the bar up and down to see what the temperatures mean. You can also see the temperatures in both Celsius and Fahrenheit.
 Now you are going to estimate the temperature. That means you are going to make a good guess about what temperature it is in each scene described. (It will tell you how.)
 Choose a game form Math 2 — Addition!
Day 151*
 *Review graphs (Day 151 worksheet). Fill in the graph and answer the questions.
 Choose a game from Math 2 — Subtraction!
Day 152
 Review coins.
 Count up the coins.
 Choose a game form Math 2 — Addition!
Day 153
 Review measuring with a ruler.
 What time is it? Can you tell time to the quarter hour? Shoot the time that matches the clock.
 Choose a game from Math 2 — Subtraction!
Day 154
 Do you know how much you weigh? If you are American, you weigh yourself in pounds. When you were born, they told your parents your weight in pounds and ounces.
 a new baby weighs around 7 pounds
 a cup of milk weighs about 8 ounces
 a BIG block of cheese might weigh 1 pound
 a slice of bread might weigh 1 ounce
 Try and figure out if these things should be weighed in ounces or pounds.
 Choose a game form Math 2 — Addition!
Day 155*
 Complete the review page for today (Day 155 worksheet).
Day 156*
 *Turn on your thinking cap and complete today’s worksheet (Day 156 worksheet).
Adding and Subtracting Tens and Ones
Day 157
 Make a picture of the number 16 online.
 Go the manipulatives page. Click on Manipulatives and choose “Bears in a Boat.”
 Each boat holds ten bears. Drag one boat out onto your white board. Fill it up. Now you have ten. How many more bears do you need to make 16? Drag more bears onto the empty part of the board.
 You have 1 ten and 6 ones.
 Now make a picture of the number 23. You need two tens, or two boats. (Click on the boats and then click on the minus () magnifying glass to make them smaller so there is room.)
 Make two tens and then add three more bears to make 23.
 You have 2 tens and 3 ones.
 Count the tens and ones. Choose numbers up to 59. The blue blocks are in groups of ten. Each tower of blue blocks is 1 ten. You count them 10, 20, 30…
Day 158
 Count the objects. Count the number of lines of tens. Then count the ones.
 Count the tens and then the ones.
Day 159
 Write the number. Choose the right number of tens. Then choose the right number of ones.
 “Write the value of the tens and ones. For example, in 24 the 4’s value is just 4 (picture 4 blocks), but the 2 is really 2 tens which is 20 (blocks). If the problem underlined the 2, you would write 20. An easier way to do it is to read the number out loud. We say TWENTY – four. The 2 isn’t just a 2, it’s twenty.”
Day 160*
 Today we are going to separate tens and ones into addition problems. Here are some examples.
 11 = 10 + 1 It’s just like counting the groups of ten first and then adding on how many ones are left.
 17 = 10 + 7 Seventeen is one ten and seven ones.
 25 = 20 + 5 The number twentyfive is two groups of ten (20) and five more ones.
 34 = 30 + 4
 75 = 70 + 5
 81 = 80 + 1
 *Do you think you could do it? Complete the worksheet on tens and ones in expanded form (Day 160 worksheet).
Day 161
 Watch this presentation on adding and subtracting tens. It will play automatically. You don’t need to turn the pages. It will talk to you too, so make sure you have the volume on.
 Go to this game page. Before you play the game, follow my instructions.
 Drag a stack of ten blocks onto the board. It should say 10. Do you see it?
 Drag more stacks of ten blocks onto the board and watch the number change. You are adding tens.
 Now take the ten stacks away, one at a time, and watch the number change. You are subtracting tens.
 Now you play that game if you like.
Day 162*
 *Complete the worksheet on adding and subtracting tens (Day 162 worksheet).
Day 163
 Add ten to sink the subs.
Day 164
 Play fruit splat. Choose level 3 and try adding tens.
Day 165
 Play fruit splat. This time subtract tens.
Day 166*
 When you add ten to a number, you just have to add 1 to the number in the tens spot.
 Watch this presentation on adding tens. It will play automatically and talk to you.

 40 + 10 = 50 You start with 4 tens. That’s 40. Then you add 1 ten. 4 tens + 1 tens = 5 tens. 5 tens is 50.
 35 + 10 = 45 The number 35 has 3 tens. Then you add 1 ten. 3 tens + 1 ten = 4 tens. The ones stay the same. We added nothing to the ones, so the answer is 45 .
 *Give it a try. Complete the worksheet on adding tens (Day 166 worksheet).
Day 167*
 *Do your review worksheet (Day 167 worksheet).
Day 168*
 Watch this presentation on subtracting tens.
 *Complete the worksheet on subtracting tens (Day 168 worksheet). It’s what you did yesterday. Here are some examples.
 20 – 10 = 10 (2 tens – 1 ten = 1 ten)
 23 – 10 = 13 (2 tens – 1 ten = 1 ten You aren’t taking away any ones, so that number stays the same.)
 47 – 10 = 37
 50 – 20 = 30 (5 tens – 2 tens = 3 tens)
 56 – 20 = 36 (5 tens – 2 tens = 3 tens You aren’t taking away any ones, so that number stays the same.)
Day 169*
 *Look at your worksheet for today (Day 169 worksheet). It’s only adding but it uses bigger numbers. It’s the same thing, though. You can do it. Let’s look at a couple of examples before you start.
 40 + 80 = ? 4 tens + 8 tens = ?
 What is 4 plus 8? (answer: 12)
 So the answer is 12 tens. How do you write that?
 Well, how do you write 6 tens? You add a zero and write 60.
 How do you write 4 tens? You add a zero and write 40.
 How do you write 12 tens? You add a zero and write 120.
 Let’s try one more. 90 + 50 = ?
 9 tens plus 5 tens
 9 + 5 = 14
 14 tens is 140
 90 + 50 = 140
Day 170*
 *Complete the subtraction worksheet (Day 170 worksheet). It’s just like Day 169 but with subtraction. Here’s one example.
 130 – 80 = ?
 13 tens – 8 tens = ?
 13 – 8 = 5
 13 tens – 8 tens = 5 tens
 130 – 80 = 50
Day 171*
 Watch this presentation on subtracting tens and ones.
 *Try some. Complete Part A of your worksheet for today (Day 171 worksheet).
 Sometimes there is no ten in the bottom number, so you only need to subtract the ones.
 Here is an example.
 46 – 3 = ?
 6 ones – 3 ones = 3 ones
 You aren’t taking away any tens, so there are still 4 tens.
 The answer is 4 tens and 3 ones or 43.
 Complete Part B of your worksheet.
Day 172*
 Watch this presentation on adding tens and ones.
 And with adding nothing in the tens?
 46 + 2 = ?
 6 ones + 2 ones = 8 ones
 4 tens + no more tens = 4 tens
 The answer is 4 tens and 8 ones. That’s 48.
 46 + 2 = 48
 Complete the worksheet on adding tens and ones (Day 172 worksheet).
Day 173*
 Complete your worksheet for today (Day 173 worksheet). You need to pay attention! Some are + and some are . If you don’t pay attention, you will get some wrong. Make sure you subtract when it says minus. Make sure you add when it says plus.
Day 174
 We’re going to try one more thing before the end of the year. You are almost there!
 Watch this presentation on adding tens and ones.
 Watch this video on adding this way. Stop around 5:40 when it says “to stop and work on your worksheet.” (You don’t have a worksheet!)
Day 175*
 Watch this video on regrouping and carrying the 1 to the tens column.
 *Then complete this worksheet on adding with regrouping (Day 175 worksheet).
Day 176*
 Watch this video on carrying the 1 to the tens column.
 *Then complete this worksheet on adding twodigit numbers with regrouping (Day 176 worksheet). Add the ones. Add the tens. Add the extra one if it is there.
 Check your answers. Fix your mistakes.
Day 177* (Portfolio time: Save a worksheet from this week for your portfolio.)
 *Complete this worksheet of addition word problems with bigger numbers (Day 177 worksheet). You know how to add them!
Day 178*
 Rewatch one of the videos from day 174, 175 or 176.
 *Complete this worksheet on twodigit addition (Day 178 worksheet).
 Check your answers.
Day 179*
 *Complete this worksheet of subtraction word problems (Day 179 worksheet).
Day 180
 Play Connect Four. You have to get four of your color in a row. It can be up and down, across or diagonal.
Congratulations on finishing second grade math!
Summer School
 Learn those facts. You could use our facts practice workbooks or make a free account at xtramath.org and make a free account. Use it every day until you finish addition and subtraction. Make sure you know those facts. (Parents: If this isn’t coming easily for your child, you can slow it down. Click on parent/teacher and log in. Choose the child’s tab. Choose Change Program. Choose 6 second addition. When it’s mastered, you can change to subtraction, etc.)
 Then use the math game page to practice and not forget. Use the level 2 games.