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Lesson: Adding and Subtracting Decimals Mentally Mathematics • 5th Grade

In this lesson, we will learn how to recognize when we can make a whole number to add two decimals or subtract decimals from whole numbers mentally.

Lesson Plan

Students will be able to

  • add decimals by making a whole,
  • subtract decimals by counting up to a whole and then adjusting,
  • using the compensation method to add or subtract decimals.

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