# Addition Algorithm Rote or Understanding

Unit 17: Getting Better at Addition and Subtraction
Lesson 9 of 12

## Big Idea: In part 1, students all were able to add two numbers presented vertically and relate each 2-digit number to the nearest 10. Today I need to check for understanding verses the rote application of the process.

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Standards:
Subject(s):
Math, Number Sense and Operations, addition, estimation, algorithm, Operations
60 minutes

### Beth McKenna

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