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Name Multi-Part Lesson

PART C

Get ReadyMain IdeaI will make groups of tens and ones.

Vocabulary regroup

Review Vocabularyones

Tens and Ones

8-2

You can show a number as tens and ones. You can regroup 10 ones as 1 ten.

16 ones = 1 ten and 6 ones = 16

Use . Make groups of tens and ones. Write how many. 1.

C08-035A-112052

14 ones = 1 ten and

4 ones = 14

2.

C08-036A-112052 18 ones = ten and

ones =

3. 21 ones = tens and one =

4. 56 ones = tens and ones =

5.

How would you regroup 20 ones?

CheckCheckCheck

Put together 10 ones to make 1 ten.

together 10 ones to make 1 ten.

BA D

Chapter 8 • Lesson 2B three hundred forty-five 345

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panies, Inc.Practice

Use . Make groups of tens and ones. Write how many. 6.

C08-037A-112052 13 ones = ten and ones =

7.

C08-038A-112052 26 ones = tens and ones =

8.

C08-039A-112052 17 ones = ten and ones =

9. 35 ones = tens and ones =

10. 47 ones = tens and ones =

11. 67 ones = tens and ones =

12. 29 ones = tens and ones =

13. Explain how to regroup 51 ones as tens and ones.

Math at Home Activity: Ask your child to regroup 83 as tens and ones.346 three hundred forty-six

345_346_CH08_L2B_112051.indd 346 7/14/09 2:21:20 PM