1
Discuss how Jada’s equations match Lin’s diagram.
Discuss how Jada’s equations match Lin’s diagram.
1
Finish Jada’s work to find the value of 582 - 145.
Finish Jada’s work to find the value of 582 - 145.
Grade 2 Unit 7
Lesson 16: Subtract Within 1,000
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 7
Lesson 16: Subtract Within 1,000
CC BY 2021 Illustrative Mathematics®
Decide if each statement is true or false. Be prepared to explain your reasoning.
2 hundreds + 3 tens + 4 ones =
2 hundreds + 3 tens + 14 ones
2 hundreds + 3 tens + 4 ones =
1 hundred + 13 tens + 4 ones
Discuss how Jada’s equations match Lin’s diagram.
Finish Jada’s work to find the value of 582 - 145.
Jada is thinking about how to find the value of 402-298.
Jada says she knows a way to count on to find the difference. She showed her thinking using a number line.
Explain Jada’s thinking.
Jada says you can’t decompose to find the value of because there aren’t any tens.
Do you agree with Jada? Use base-ten blocks, diagrams, or other representations to show your
thinking.
Find the value of each expression in a way that makes sense to you. Show your thinking. Organize it so it can be followed by others.
525 - 214
700 - 589
Choose one expression and find the value by subtracting by place.
Show your thinking.
Explain why you chose that expression.
Choose a different expression and find the value using a different method.
Show your thinking.
Explain why you chose that expression.
1 hundred + 13 tens + 4 ones =
1 hundred + 12 tens + 14 ones
683 - 398
918 - 608
735 - 457
602 - 487
