Introducing the Addition Algorithm

Unit 17: Getting Better at Addition and Subtraction
Lesson 8 of 12

Objective: SWBAT estimate the answer for a 2-digit addition problem and add when the numbers are in columns.

Big Idea: Students are able to add and subtract when numbers are presented horizontally. They add and subtract tens and ones with appropriate fluency. Today they will be introduced to adding two 2-digit numbers presented vertically.

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Math, Number Sense and Operations, addition, addition algorithm, Operations
  45 minutes
100 0818
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