Unit 2 - Lesson 7 - Grade 2: Illustrative Mathematics

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12 Questions

Note from the author:

Grade 2 Unit 2
Lesson 7: Subtract Two Digits
CC BY 2021 Illustrative Mathematics

Instructions

Grade 2 Unit 2
Lesson 7: Subtract Two Digits
CC BY 2021 Illustrative Mathematics

Lesson: Subtract Two Digits

How Many Do You See: Compose a Ten (Warm Up)

How many do you see?

What's the Difference?

Find the value of each difference. Show your thinking. Use blocks if it helps.

46 - 28 = _______ 
 

93 - 54 = _______ 

Use Blocks to Take Away

Choose a player card. Mix up the other cards and put them face down.

Player name: _______ 

Represent your starting number with base-ten blocks.

Starting number: _______ 

Take turns picking a card. Read the card to the group.

Listen for your player’s name. Use the blocks to show the change.

Explain your thinking to your group.

Write an equation to show the new number.

Equation 1: _______ 

Equation 2: _______ 

My player now has _______ tens and _______ ones.

10.

Ending number: _______ 

Share this number with your group.

11.

Cool Down: Decompose to Subtract

12.