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4-12

Name

Date

Add or subtract.

1. 8,500

- 1,265

2. 24,187

- 14,856

__ __ __

7,235 9,331 976,263

Solve using any method and show your work. Check your

work with estimation.

3. 683,519

+ 292,744

4. 19

× _ 82

1,558

5. 649

× __ 3

1,947

6. 2,934

× __ 8

23,472

Use the rule to find the next five terms in the pattern.

7. 3, 6, 12, 24, …

8. 25, 60, 95, 130, …

Rule: multiply by 2

Rule: add 35

48, 96, 192, 384, 768 165, 200, 235, 270, 305

Use the rule to find the first ten terms in the pattern.

9. First term: 18 Rule: add 12

18, 30, 42, 54, 66, 78, 90, 102, 114, 126

10. Stretch Your Thinking For a cookie exchange, Kaiya

bakes 2 pans of 12 chocolate chip cookies each, 3 pans

of 16 lemon drops each, and 4 pans of 10 peanut butter

cookies each. She is dividing the cookies into 8 tins, with

an equal number of each type of cookie in each tin. How

many of each type of cookie will be in each tin? How

many cookies in all will be in each tin? Explain.

Possible explanation: (2 × 12) ÷ 8 = 24 ÷ 8 = 3

chocolate chip cookies in each tin; (3 × 16) ÷ 8 =

48 ÷ 8 = 6 lemon drops in each tin; (4 × 10) ÷ 8 =

40 ÷ 8 = 5 peanut butter cookies in each tin; 3 +

6 + 5 = 14 cookies in each tin.

112 UNIT 4 LESSON 12 Focus on Mathematical Practices

© Houghton Mifflin Harcourt Publishing Company

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