Unit 5, Lesson 6

Use the associative property to subtract from three-digit numbers and verify solutions with addition

EngageNY 60 min(s)
In this lesson, students use the compensation strategy--an application of the associative property--to subtract from three-digit numbers. They learn to add or subtract the same number from both terms in a subtraction expression in order to make an equivalent problem that involves no renaming. For example, when subtracting 610 - 290, they might add 10 to both numbers in order to create the equivalent problem 620 - 300. Along the way, students model this strategy with tape diagrams and check their work with addition.

You must log inorsign upif you want to:*

*Teacher Advisor is 100% free.

Teacher Advisor uses cookies and other tracking technologies for performance, analytics, and marketing purposes.

By using this website, you accept this use. Learn more about these technologies in the Privacy policy.

Download Chat? You can download the chat for future reference.
Delete Chat History? You can’t reverse this action.
Service is currently unavailable Please, try to reopen the chat window