The Division Algorithm—Converting Decimal Division into Whole Number Division Using Mental Math

Make math much simpler with mental math methods. The 16th installment in a series of 21 looks at ways scholars can apply mental math to convert division problems into easier problems with the same quotient. Multiplying or dividing both dividend and divisor by the same value is the preeminent strategy for the lesson.

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CCSS: Designed
Instructional Ideas

  • Assign the problem set as either classwork or homework depending on available class time
  • Have the class create a graphic organizer outlining mental math strategies
Classroom Considerations

  • Individuals should have a broad understanding of mental math from previous grades
Pros

  • Includes some scaffolding tips for struggling learners
  • Provides a suggested pacing guide to keep the class on track
Cons

  • None
Common Core