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Unit 5 - Lesson 3 - Grade 2: Illustrative Mathematics

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Grade 2 Unit 5
Lesson 3: Compose Three-digit Numbers
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 5
Lesson 3: Compose Three-digit Numbers
CC BY 2021 Illustrative Mathematics®
Lesson: Compose Three-digit Numbers

Number Talk: Add Tens and Ones (Warm Up)

Find the value of each expression mentally.

Sort Blocks by Value

Sort the blocks.
We have _______ hundreds.

We have _______ tens.

We have _______ ones.
Represent the same value with the fewest number of blocks possible.
We have _______ hundreds.

We have _______ tens.

We have _______ ones.

Represent the value of your blocks using base-ten diagrams, words, or numbers.

The Same But Different

Mai's blocks.

Mai has _______ hundreds _______ tens _______ ones.

Draw a base-ten diagram to represent the same total value with the fewest number of each unit.

What is the value of Mai’s blocks?

Diego's blocks.

Diego has _______hundreds _______ tens _______ones.

Draw a base-ten diagram to represent the same total value with the fewest number of each unit.

What is the value of Diego’s blocks?

Cool Down: How Many Blocks?
How many of each?

There are _______ hundreds.
There are _______ tens.
There are _______ ones.

Draw a base-ten diagram to represent the same total value with the fewest number of blocks.