Math Expressions Homework_Remembering_SE_Grade_1.pdf Current copy 2

Homework and Remembering

Volume 1

Cover Credit: (Koala) ©Life on white/Alamy

Copyright © by Houghton Mifflin Harcourt Publishing Company

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ISBN: 978-0-547-82420-8

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1-1 Name

1. Write how many dots. See the 5 in each group.

■■

■■

■■

2. See the 5-group. Draw extra dots to show 8
the number.

97

© Houghton Mifflin Harcourt Publishing Company 3. Write the numbers from 0–10.

0 1 2 3 4 5 6 7 8 9 10

UNIT 1 LESSON 1 Discuss Numbers 1–10 1

1-1 Name © Houghton Mifflin Harcourt Publishing Company

Write the numbers.

1. 0 0
2. 1 1
3. 2 2
4. 3 3
5. 4 4

6. Stretch Your Thinking Draw 2 flowers.

2 UNIT 1 LESSON 1 Discuss Numbers 1–10

1-2 Name ■

© Houghton Mifflin Harcourt Publishing Company Write how many dots. See the 5 in each group.
1.

■■■■

Write how many leaves. See the 5 in each row.

■2.
■3.
■4.
■5.
■6.

7. Write the numbers from 0–10.

0 1 2 3 4 5 6 7 8 9 10

8. Explain to your Homework Helper how 5-groups
help you see 6, 7, 8, 9, 10.

UNIT 1 LESSON 2 Visualize Numbers as a 5-Group and Ones 3

1-2 Name © Houghton Mifflin Harcourt Publishing Company

Write the numbers.

1. 5 5
2. 6 6

3. 7 7

4. 8 8
5. 9 9

6. Stretch Your Thinking Draw 3 cats.

4 UNIT 1 LESSON 2 Visualize a Number as a 5-Group and Ones

1-3 Name

Write the partners.

1. 5 = 4 + 1

5=

5=

2. 5 5= 5 5
5

© Houghton Mifflin Harcourt Publishing Company 3. Write the numbers.

00 Partners of 2 Through 5 5
11

UNIT 1 LESSON 3

1-3 Name

Write how many airplanes. See the 5 in each row.
1.
2.
3.
4.

Write how many dots. See the 5 in each group.

■5. ■6.

■7. ■8. © Houghton Mifflin Harcourt Publishing Company

9. Stretch Your Thinking Draw 4 trees.

6 UNIT 1 LESSON 3 Partners of 2 Through 5

1-4 Name

1. Show and write the 6-partners.

+ 6=
+ 6=
+ 6=
+ 6=
+ 6=

2. Write the 6-partners. 6 6 6

66

© Houghton Mifflin Harcourt Publishing Company 3. Write the numbers.

22 Partners of 6 7

33

UNIT 1 LESSON 4

1-4 Name

Write how many chickens. See the 5 in each row.

1.
2.
3.

Write the partners.

4. 5 = 4 + 1

5=

5=

5=

5. 5 5 5 5

6. Stretch Your Thinking Draw 5 balloons. © Houghton Mifflin Harcourt Publishing Company

8 UNIT 1 LESSON 4 Partners of 6

1-5 Name

Show the 7-partners and switch the partners.
1. + and +

2. + and +

3. + and +

Write the partners and the switched partners.

4. 7-train + + +

+++

© Houghton Mifflin Harcourt Publishing Company Use patterns to solve. ■4 + 1 = ■5 + 1 =
■1 + 1 = ■3 + 1 =
■5. 2 + 1 = ■1 + 1 = ■1 + 2 =
■6 + 1 = ■1 + 4 = ■1 + 3 =

■6. 1 + 6 =
■1 + 5 =

Write the numbers.

7. 4 4

8. 5 5 Partners of 7 9

UNIT 1 LESSON 5

1-5 Name

Write how many dots. See the 5 in each group.
1.

Show and write the 6-partners.

2. + 6 =

+ 6=

+ 6=

+ 6=

+ 6=

Add. ■5 + 0 = ■3 + 0 = © Houghton Mifflin Harcourt Publishing Company
■4 + 1 =
■3. 1 + 0 =
■ ■4. 1 + 1 =
2+1=

5. Stretch Your Thinking Draw 6 apples. Use a 5-group.

10 UNIT 1 LESSON 5 Partners of 7

1-6 Name

Show the 8-partners and switch the partners.
1. + and +

2. + and +

3. + and +

4. + and +

Write the partners and the switched partners.

5. 8-train + + + +
+
+++

© Houghton Mifflin Harcourt Publishing Company Use patterns to solve. ■5 + 0 = ■0 + 4 =
■0 + 2 = ■0 + 7 =
■6. 8 + 0 =
■0 + 6 =

Write the numbers.

7. 6 6

8. 7 7 7 7 Partners of 8 11

UNIT 1 LESSON 6

1-6 Name

Write how many of each food. See the 5 in each row.
1.
2.
3.

Show the 7-partners and switch the partners.
4. + and +
5. + and +
6. + and +

7. Write the partners and the switched partners.

7-train + + + © Houghton Mifflin Harcourt Publishing Company

+++

8. Stretch Your Thinking Draw 7 fish. Use a 5-group.

12 UNIT 1 LESSON 6 Partners of 8

1-7 Name

Show the 9-partners and switch the partners.
1. + and +
2. + and +
3. + and +

4. + and +

Write the partners and the switched partners.

5. 9-train + + + +
+
+++

© Houghton Mifflin Harcourt Publishing Company Use patterns to solve. ■7 - 1 = ■4 - 1 =
■5 - 1 = ■8 - 1 =
■6. 6 - 1 =
■9 - 1 =

Write the numbers.

7. 8 8

8. 9 9 Partners of 9 13

UNIT 1 LESSON 7

1-7 Name

Show the 8-partners and switch the partners.
1. + and +
2. + and +
3. + and +
4. + and +

5. Write the partners and the switched partners.

8-train + + + +

+ + ++

Subtract. ■2 - 1 = ■3 - 1 = © Houghton Mifflin Harcourt Publishing Company
■5 - 2 = ■3 - 2 =
■6. 4 - 1 =
■7. 2 - 2 =

8. Stretch Your Thinking Draw 8 bugs. Use a 5-group.

14 UNIT 1 LESSON 7 Partners of 9

1-8 Name

1. Write the 10-partners and the switched partners.

9+1 + + + +
+
1+9 + + +
10
10 10 10 10

10 10 10 10 10

2. Use patterns to solve.

© Houghton Mifflin Harcourt Publishing Company ■7 + 1 = ■9 + 1 = ■1 + 8 =
■9 - 1 =
■10 - 1 = ■7 - 1 = ■7 + 0 =
■10 - 0 =
■9 + 0 = ■0 + 10 =
Partners of 10 15
■8 - 0 = ■7 - 0 =

UNIT 1 LESSON 8

1-8 Name

Show the 9-partners and switch the partners.
1. + and +
2. + and +
3. + and +
4. + and +

Write the partners and the switched partners.

5. 9-train + + + +
+
+++

6. Write the numbers from 0 –10. © Houghton Mifflin Harcourt Publishing Company

0 47

7. Stretch Your Thinking Draw 9 stars. Use a 5-group.

16 UNIT 1 LESSON 8 Partners of 10

1-9 Name 10 = +

Show and write the partners of 10. 10 = +
1.
2. 10 = +
3.
4. 10 = +
5.
6. 10 = +
7.
8. 10 = +
9.
© Houghton Mifflin Harcourt Publishing Company 10 = +
UNIT 1 LESSON 9
10 = +

10 = +

Focus on Mathematical Practices 17

1-9 Name

Write the 10-partners and the switched partners.
1.

9+1 + + + +
+
1+9 + + +
10
2. 10 10 10 10

10 10 10 10 10

3. 10-train + + + + +
+
+ + ++ © Houghton Mifflin Harcourt Publishing Company

4. Stretch Your Thinking Draw 10 marbles.
Use 5-groups.

18 UNIT 1 LESSON 9 Focus on Mathematical Practices

2-1 Name

Write the partners and the total. 2. ■+■

■ ■1. +

■Total ■Total
■ ■3. + ■ ■4. +

■Total ■Total
■ ■5. + ■ ■6. +

© Houghton Mifflin Harcourt Publishing Company ■Total ■Total
■ ■7. + ■ ■8. +

■Total ■Total

UNIT 2 LESSON 1 Represent Addition 19

2-1 Name

1. Write the numbers from 0–10.

0 1 2 3 4 5 6 7 8 9 10

2. Write how many dots. See the 5 in each group.

■■■■ ■

Write how many leaves. See the 5 in each row.

■3.
■4.
■5.

6. Write the 5-partners as a train. + + © Houghton Mifflin Harcourt Publishing Company

5-train
++

7. Stretch Your Thinking Write ■+■
partners of 7. Draw a Break-Apart
Stick to show the partners. ■Total
Write the total.
Represent Addition
20 UNIT 2 LESSON 1

2-2 Name

Write the partners and total for each circle drawing.

■ ■1. + ■ ■2. +

■Total ■Total
■ ■3. + ■ ■4. +

■Total ■Total
■ ■5. + ■ ■6. +

© Houghton Mifflin Harcourt Publishing Company ■Total ■Total
■ ■7. + ■ ■8. +

■Total ■Total

UNIT 2 LESSON 2 Addition with Circle Drawings 21

2-2 Name

1. Write how many dots. See the 5 in each group.

Write how many of each food. See the 5 in each row.
2.
3.
4.

5. Write the 6-partners as a train. + + +

6-train
++

6. Stretch Your Thinking Make a circle drawing © Houghton Mifflin Harcourt Publishing Company
to show a set of partners of 10.

22 UNIT 2 LESSON 2 Addition with Circle Drawings

2-3 Name

Write the partners and the total. Then write the equation.

■ ■1. +

■Total Equation
■ ■2. +

■Total Equation
■ ■3. +

© Houghton Mifflin Harcourt Publishing Company ■Total Equation
■ ■4. +

■Total Equation

UNIT 2 LESSON 3 Addition Equations 23

2-3 Name

1. Fill in the numbers from 0–10.

0 47

Show the 7-partners and switch the partners.

2. + and +
+
3. + and +

4. + and +
+
5. Write the partners and the switched partners.

7-train + +
+ +

6. Stretch Your Thinking Make a circle drawing © Houghton Mifflin Harcourt Publishing Company
to match the picture. Then write the equation.

24 UNIT 2 LESSON 3 Equation

Addition Equations

2-4 Name

Write the partners and the total. Then write the equation.

■ ■1. +

■Total Equation
■ ■2. +

■Total Equation
■ ■3. +

© Houghton Mifflin Harcourt Publishing Company ■Total Equation
■ ■4. +

■Total Equation

UNIT 2 LESSON 4 Addition Equations and Stories 25

2-4 Name

Write how many of each food. See the 5 in each row.
1.

2. and +
3. +
Show the 8-partners and switch the partners. +
4. + +

5. + and +
6. + and +
7. + and

8. Write the partners and the switched partners. © Houghton Mifflin Harcourt Publishing Company

8-train + + +

+++

9. Stretch Your Thinking Write an equation Addition Equations and Stories
to match the circle drawing.

Equation

26 UNIT 2 LESSON 4

2-5 Name

Count on. Write the total. 2. Total

1. Total 7 ■=

■5 = Total

3. Total 4. ■=

■3 = 6 Total

5. Total 6. ■=

■4 = 5 Total

7. Total 8. ■=

■2 = 4 Total

© Houghton Mifflin Harcourt Publishing Company 9. Total 10. ■=

■5 = 8 Total

11. Total 12. ■=

■6 = 3

UNIT 2 LESSON 5 Explore Solution Methods 27

2-5 Name

Show the 9-partners and switch the partners. and +
1. +

2. + and +
3. + and +

4. + and +

5. Write the partners and the switched partners. +
+
9-train + + +

+++

Use patterns to solve.

■ ■6. 0 + 9 = ■0 + 7 =
6+0=

■ ■7. 8 - 0 = ■10 - 0 = © Houghton Mifflin Harcourt Publishing Company
2-0=

■ ■8. 1 + 4 = ■5 + 1 =
9+1=

9. Stretch Your Thinking Count on to find

■the total. 7 + 2 =

Now count all. Did you get the same answer? Explain.

28 UNIT 2 LESSON 5 Explore Solution Methods

2-6 Name

Count on to find the total.

■1. 6 + 3 = ■2. 3 + 5 = ■3. 4 + 5 =
■6. 2 + 4 =
■4. 5 + 5 = ■5. 4 + 6 = ■9. 6 + 2 =

■7. 4 + 3 = ■8. 7 + 2 =

Find the total number of toys. 11. 5 bears in the box
10. 7 horns in the box

■ Total ■ Total

© Houghton Mifflin Harcourt Publishing Company 12. 3 balls in the box 13. 8 train cars in the box

■ Total ■ Total

UNIT 2 LESSON 6 Addition Strategies: Counting On 29

2-6 Name

1. Fill in the numbers from 0–10. +

1 4 67

Show the 10-partners and switch the partners.
2. + and

3. + and +
4. + and +
5. + and +

6. + and +

7. Stretch Your Thinking Count on with dots © Houghton Mifflin Harcourt Publishing Company
to find the total. Write the total.

■6 + 3 =

30 UNIT 2 LESSON 6 Addition Strategies: Counting On

2-7 Name ■2.
2+5=
Underline the greater number.
Count on from that number.

1.

■3 + 6 =

3. ■4.
7+3=
■2 + 8 =

5. ■6.
3+5=
■4 + 5 =

7. ■8.
6+4=
■2 + 7 =

© Houghton Mifflin Harcourt Publishing Company 9. ■10.
2+6=
■4 + 3 =

11. ■12.
6+3=
■8 + 2 =

UNIT 2 LESSON 7 Count On from the Greater Number 31

2-7 Name

Write the partners and the total. 2. ■+■

■ ■1. +

■Total ■Total
■ ■3. + ■ ■4. +

■Total ■Total

Use patterns to solve. ■4 - 1 = ■10 - 1 =
■7 + 0 =
■5. 8 - 1 = ■6 - 0 =

■6. 0 + 5 = ■0 + 9 = © Houghton Mifflin Harcourt Publishing Company

■7. 10 - 0 = ■5 - 0 =

8. Stretch Your Thinking Sami counts on to solve

this problem. 2 + 8 = ■

Sami counts 8, 9 and says the total is 9. What did

she do wrong?

32 UNIT 2 LESSON 7 Count On from the Greater Number

2-8 Name

Underline the greater number.
Count on from that number.

1. ■2.
1+9=
■2 + 7 =

3. ■4.
6+3=
■3 + 4 =

5. ■6.
3+7=
■4 + 5 =

7. ■8.
5+3=
■2 + 4 =

© Houghton Mifflin Harcourt Publishing Company 9. ■10.
5+2=
■8 + 2 =

11. ■12.
6+2=
■3 + 6 =

13. ■14.
7+3=
■2 + 8 =

UNIT 2 LESSON 8 Addition Game: Unknown Totals 33

2-8 Name

Write the partners and the total. 2. ■+■

■ ■1. +

■Total ■Total
■ ■3. + ■ ■4. +

■Total ■Total

Write the partners and total for each circle drawing.

■ ■5. + ■ ■6. +

■Total ■Total © Houghton Mifflin Harcourt Publishing Company

7. Stretch Your Thinking Ring the greater Addition Game: Unknown Totals
number and count on from that number.

Write the total.

■4 + 5 =

34 UNIT 2 LESSON 8

2-9 Name

Underline the greater number. ■2.
Count on from that number. 6+3=

1. ■4.
2+3=
■4 + 5 =
6.
3.
■4 + 2 =
■3 + 5 = ■8.

5. 7+3=

■2 + 8 =

7.

■4 + 3 =

© Houghton Mifflin Harcourt Publishing Company 9. ■10.
6+2=
■8 + 2 =

11. ■12.
5+2=
■3 + 7 =
■14.
13. 7+2=

■2 + 7 =

UNIT 2 LESSON 9 Practice Counting On 35

2-9 Name

Write the partners and total for each circle drawing.

■ ■1. + ■ ■2. +

■Total ■Total
■ ■3. + ■ ■4. +

■Total ■Total

Write the partners and the total. Then write the equation.

■ ■5. +

■Total Equation © Houghton Mifflin Harcourt Publishing Company

6. Stretch Your Thinking Write an addition
equation. Draw dots to count on to solve it.

36 UNIT 2 LESSON 9 Practice Counting On

2-10 Name

Solve. Write how many are left.
1. There are 7 boats.

Then 4 sail away. ■7 - 4 =
2. There are 10 candles. ■10 - 7 =
■8 - 6 =
Then 7 go out. ■9 - 5 =
3. There are 8 muffins. ■6 - 4 =

Then 6 are eaten. Represent Subtraction 37
4. There are 9 fish.

© Houghton Mifflin Harcourt Publishing Company Then 5 swim away.
5. There are 6 elephants.

Then 4 go away.

UNIT 2 LESSON 10

2-10 Name

Write the partners and the total. Then write the equation.

■ ■1. +

■Total Equation
■ ■2. +

■Total Equation
■ ■3. +

■Total Equation © Houghton Mifflin Harcourt Publishing Company

4. Stretch Your Thinking Write an equation
for this story problem. There are 8 ants.
Then 2 crawl away.

Equation

38 UNIT 2 LESSON 10 Represent Subtraction

2-11 Name

Subtract and write the equation. Equation
1. Equation
Equation
Subtract 3 Equation
Equation
2. Equation
Subtract 5
Subtraction with Drawings and Equations 39
3.
Subtract 3

4.
Subtract 4

© Houghton Mifflin Harcourt Publishing Company 5.
Subtract 4

6.
Subtract 6

UNIT 2 LESSON 11

2-11 Name

Write the partners and the total. Then write the equation.

■ ■1. +

Equation

■Total
■ ■2. +

■Total Equation

Count on. Write the total. 4. Total

3. Total 7 ■=

■5 =

5. Total 6. Total © Houghton Mifflin Harcourt Publishing Company

■3 = 6 ■=

7. Stretch Your Thinking Make a circle drawing.
Then write the equation to solve. There are
6 butterflies. 4 fly away. How many are left?

40 UNIT 2 LESSON 11 Equation

Subtraction with Drawings and Equations

2-12 Name

Use the picture to solve the equation.

1. 2.

■10 - 7 = ■7 - 2 =
■8 - 4 =
3. 4. ■6 - 2 =
■9 - 4 =
■9 - 6 = ■8 - 5 =
■7 - 7 =
5. 6.

■5 - 3 =

7. 8.

■7 - 4 =

© Houghton Mifflin Harcourt Publishing Company 9. 10.

■6 - 4 =

11. 12.

■10 - 8 =

UNIT 2 LESSON 12 Practice with Subtraction 41

2-12 Name

Count on. Write the total.

1. Total 2. Total

3 ■= 5 ■=

3. Total 4. Total

■2 = 4 ■=

Find the total number of toys. 6. 7 train cars in the box
5. 8 horns in the box

■ Total ■ Total

7. Stretch Your Thinking Make a circle drawing © Houghton Mifflin Harcourt Publishing Company
to show subtraction. Then write the equation.

42 UNIT 2 LESSON 12 Equation

Practice with Subtraction

2-13 Name

Use the circles to solve the equation.

1. 2.

■9 - 5 = ■6 - 2 =

3. 4. ■8 - 5 =

■10 - 8 = ■5 - 2 =

5. 6. ■9 - 6 =
■8 - 6 =
■6 - 3 = ■7 - 1 =
■8 - 4 =
© Houghton Mifflin Harcourt Publishing Company 7. 8.
10. Generate Subtraction Problems 43
■7 - 3 =

Solve the equation.

■9. 6 - 4 =

■11. 10 - 2 = 12.

■13. 9 - 7 = 14.

UNIT 2 LESSON 13

2-13 Name

Find the total number of toys. 2. 6 bears in the box
1. 4 balls in the box

■ Total ■ Total
■4. 2 + 5 =
Underline the greater number.
Count on from that number.

■3. 6 + 3 =

■5. 2 + 6 = ■6. 7 + 2 =

■7. 3 + 7 = ■8. 3 + 5 = © Houghton Mifflin Harcourt Publishing Company

9. Stretch Your Thinking Use a circle drawing
to solve this equation. Show your work.

8-5=3

44 UNIT 2 LESSON 13 Generate Subtraction Problems

2-14 Name

Use addition to solve subtraction.

■1. 5 + 5 = 10, so I know 10 - 5 = .
■2. 6 + 4 = 10, so I know 10 - 4 = .
■3. 3 + 6 = 9, so I know 9 - 3 = .

Solve the vertical form. Use any method.

4. 2 5. 4 6. 7 7. 2 8. 4

+_5 +_5 +_1 +_8 +_3

9. 3 10. 8 11. 1 12. 6 13. 5

+_5 +_1 +_9 +_3 +_4

Solve the vertical form. Think about addition.

© Houghton Mifflin Harcourt Publishing Company 14. 10 15. 8 16. 9 17. 7 18. 10

-_9 -_6 -_1 -_2 -_3

19. 9 20. 8 21. 7 22. 8 23. 9

-_7 -_1 -_4 -_3 -_6

UNIT 2 LESSON 14 Relate Addition and Subtraction 45

2-14 Name

Underline the greater number. ■2. 6 + 2 = © Houghton Mifflin Harcourt Publishing Company
Count on from that number. ■4. 5 + 4 =
■6. 2 + 8 =
■1. 3 + 7 = ■8. 4 + 3 =
■3. 2 + 5 = ■10. 7 + 2 =
■5. 6 + 3 = ■12. 5 + 3 =
■7. 9 + 1 = ■14. 1 + 7 =
■9. 2 + 6 =
■11. 3 + 4 =
■13. 4 + 6 =

15. Stretch Your Thinking Write the addition you
can use to solve the subtraction. Then solve.

■ ■ ■ ■10 - 3 =
+=

46 UNIT 2 LESSON 14 Relate Addition and Subtraction

2-15 Name

Count on to add. ■2. 3 + 5 = ■3. 6 + 2 =

■1. 4 + 2 =

4. 6 5. 5 6. 2 7. 3 8. 4

+_3 +_5 +_7 +_4 +_4

Subtract. Make a circle drawing if you wish.

■ ■ ■9. 9 - 2 =
10. 7 - 5 = 11. 6 - 3 =

© Houghton Mifflin Harcourt Publishing Company 12. 6 13. 9 14. 10 15. 5 16. 8

-_2 -_5 _- 7 -_4 -_2

UNIT 2 LESSON 15 Mixed Practice with Equations 47

2-15 Name

Solve. Write how many are left. ■9 - 7 = © Houghton Mifflin Harcourt Publishing Company
1. There are 9 candles. ■8 - 4 =

Then 7 go out. Equation
2. There are 8 boats. Equation

Then 4 sail away.
Subtract and write the equation.
3.

Subtract 4
4.

Subtract 2

5. Stretch Your Thinking Write numbers to complete
the subtraction.

■ ■- = 5

48 UNIT 2 LESSON 15 Mixed Practice with Equations