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Unit 9 - Lesson 6 - Grade 2: Illustrative Mathematics

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20 Questions
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Grade 2 Unit 9
Lesson 6: Represent Numbers with Expressions
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 9
Lesson 6: Represent Numbers with Expressions
CC BY 2021 Illustrative Mathematics®
Lesson: Represent Numbers with Expressions

True or False: Place Value (Warm Up)

Decide if each statement true or false. Be prepared to explain your reasoning.

5 hundreds + 2 tens + 7 ones = 527

4 hundreds + 12 tens + 7 ones = 527

5 hundreds + 7 ones + 2 tens = 527

Make Equations True

Find the number that makes each equation true.

5 hundreds + _______tens + 6 ones = 5 hundreds + 5 tens + 16 ones
1 hundred + 1 ten + 17 ones = 1 hundred + _______tens + 7 ones
4 hundreds + 15 tens + 3 ones = _______ hundreds + 5 tens + 3 ones
4 hundreds + 3 tens + 7 ones = 3 hundreds + _______tens + 7 ones
7 hundreds + 8 tens + 4 ones = 7 hundreds + 7 tens + _______ones
6 hundreds + 9 ones = 5 hundreds + _______tens + 9 ones
2 hundreds + 9 tens + 17 ones = _______ hundreds + 7 ones
3 hundreds + 1 ten + 5 ones = 2 hundreds + 10 tens + _______ones
If You Have Time: Make your own equation with a missing value for your partner.

Card Sort: Expressions with Three-digit Values

Directions:
  • Group the cards into sets of expressions that have the same value.
  • Record the letters of the matching cards. Write an expression that represents the same value.

letters for matching expressions:

new expression:

letters for matching expressions:

new expression:

letters for matching expressions:

new expression:

letters for matching expressions:

new expression:

Cool Down: Think of a Time

Prepare to discuss a time when representing 241 as 2 hundreds, 3 tens, and 11 ones might be helpful.