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Use this lesson to review three-digit addition strategies including base-ten drawings, number lines, and the standard algorithm.

Build familiarity with numbers from 1 to 120 with this fun game. This lesson can be used alone or with the lesson plan Then Came One.

Students sketch base-ten blocks in this lesson that builds both number sense and fluency adding to 20!

Students put their understanding of one and 10 more to work as they write word problems for classmates to solve. This lesson plan can be used alone or with Picture Addition.