## Commutative Journal - Section 1: Warm Up with a Journal Response

Commutative Journal
Commutative Journal

# Multiply and Divide by 10

Unit 10: Fluency to Automoticity
Lesson 4 of 5

## Big Idea: Counting by 10's is easy for students of this age. Knowing that base 10 can be used to help multiply and divide in the higher numbers by decomposing is critical. This lesson sets the base for future work.

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Standards:
Subject(s):
Math, multiplication rule, commutative property of multiplication, base 10, word problems, math journaling
55 minutes

### Michelle Marcus

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