Add 10 Books

Unit 15: Base 10 Bonanza
Lesson 2 of 5

Objective: SWBAT explain why the ones place doesn't change when they repeatedly add 10.

Big Idea: The CCSS emphasizes that students should be able to mentally add and subtract 10, without having to count. Help students develop a conceptual understanding of repeatedly adding 10s in this lesson-this promotes mental math!

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