# How Many Did I Start With? (Working Backwards)

Unit 11: Adding and Subtracting Whole Numbers
Lesson 11 of 11

## Big Idea: When you are given the end result and need to find the beginning number, you can work backwards.

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1 teacher likes this lesson
Standards:
Subject(s):
Math, Number Sense and Operations, addition, subtraction, Operations
55 minutes

### Rose Monroe

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