Lesson: Subtracting Fractions from Mixed Numbers: Regrouping Mathematics • 5th Grade

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In this lesson, we will learn how to subtract a proper fraction from a mixed number, where their denominators are multiples of the same number, by partitioning the mixed number, regrouping a whole if necessary, and writing equivalent fractions.

Lesson Plan

Students will be able to

  • subtract a proper fraction from a mixed number when the denominator of one is a multiple of the denominator of the other,
  • subtract proper fractions from mixed numbers when we have to regroup a whole,
  • represent calculations with models including bar models,
  • subtract by partitioning one of the mixed numbers,
  • subtract by converting mixed numbers to improper fractions,
  • understand why one method may be easier than the other.

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