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# Continuing to build mental math skills

Unit 10: Place Value
Lesson 16 of 16

## Big Idea: It is a difficult task for first graders to begin using mental math. This lesson is part of a series of lessons to give them practice with subtracting ten from any given two-digit number.

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3 teachers like this lesson
Standards:
Subject(s):
Math, Place Value, subtract, Tens and Ones, tens
30 minutes

### Jennifer Moon

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