Lesson 5 Compose and Decompose Numbers Within 1,000

    • Let’s represent numbers in many different ways.

Warm-up What Do You Know About …?

What do you know about 308?

Activity 1 How Many Did You Get?

Problem 1

Start with 2 hundreds. Grab a handful of tens and of ones.

  1. What number do your base-ten blocks represent?

  2. Represent the same number in another way. Show your thinking using diagrams, symbols, or other representations.

Problem 2

Combine your blocks with your partner’s blocks.

  1. What number do your base-ten blocks represent?

  2. Represent the same number in another way. Show your thinking using diagrams, symbols, or other representations.

Problem 3

Represent your group’s number in the following ways:

  1. without hundreds

  2. without tens

  3. without hundreds or tens

Activity 2 Let Me Count the Ways

  • Represent 356 in at least 3 different ways. Show your thinking using diagrams, symbols, or other representations.

  • Create a poster with your group to show 356 in different ways.