Undoing Multiplication With Division

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Related

Algebraic Thinking →

Summary

Multiplication and division, natural foes, are constantly seeking to undo each other. Students will attempt to reverse the effects of multiplication by dividing once, twice, or even thrice!

  1. We begin with the simplest, one-step case. Multiply by a number, then divide by the same number, and you return to where you started. But then, we try a two-step version, such as: 10 × 6 ÷ 3 ÷ 2 = 10.
  2. Now we look at cases where we divide *three* times to undo multiplication.
  3. Finally, students have a chance to continue practicing this idea [with a web app](https://byrdseed.tv/extras/undo-multiplication).

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