Loading the Bus: Decomposing Teen Numbers

Unit 3: 10: A First Grader's Best Friend
Lesson 2 of 10

Objective: SWBAT solve story problems where they decompose numbers 11-19 into ten and some more.

Big Idea: Students have spent time building the numbers 11-19. This lesson gives them the opportunity to go at it from the other direction, taking the numbers and breaking them apart into a ten and some extra.

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