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Lesson: Doubles Minus One Mathematics • 1st Grade

In this lesson, we will learn how to add two consecutive numbers with sums up to 20 by finding one less than a doubles fact.

Lesson Plan

Lesson Playlist

  • Finding One Less Than a Known Double as a Strategy to Add
    02:04
  • Finding One Less Than a Known Double as a Strategy to Add
    01:39
  • Finding One Less Than a Known Double as a Strategy to Add
    00:28

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