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CLIP 10252

Approximation and rounding in subtraction

Approximation and rounding in subtraction

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Key Info
  • Approximation and rounding in subtraction
  • Duration: 01:36
  • How to use approximation and rounding to get rough answers for two-digit subtractions. A dance routine and song show children finding rough answers for two-digit subtractions using rounding to the nearest 10 to approximate numbers before they are added. The calculations illustrated are 41-18 and 62-29.
  • Subject:



    Calculations: Subtraction

  • Keywords: approximation, rounding, rough, calculations, subtraction, minus, two digit
Ideas for use in class
  • Shows how to find rough answers to two-digit subtractions.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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