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Divide fractions: how many times does it fit? (5th grade math)
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We can solve a division such as 2 divided by 1/4 by thinking how many times the divisor fits into the dividend. In this case, how many times does 1/4 fit into 2? Or, how many fourths are in 2 whole pies? The answer is eight.
We look at a variety of such questions, relying on visual models. Solving these types of division problems also leads us to notice that division problems seem to be related to MULTIPLICATION.
And that is indeed the case: the shortcut for fraction division (not taught here) has to do with changing a division problem into a multiplication.
This video addresses the standard 5.NF.B.7: divide whole numbers by unit fractions.
Practice fraction division online with these free exercises - highly customizable!
Math Mammoth Fractions 2 -- self-teaching worktext teaching fraction multiplication and division:
More 5th grade math videos:
This lesson is part of the Math Mammoth Grade 5 curriculum:
We look at a variety of such questions, relying on visual models. Solving these types of division problems also leads us to notice that division problems seem to be related to MULTIPLICATION.
And that is indeed the case: the shortcut for fraction division (not taught here) has to do with changing a division problem into a multiplication.
This video addresses the standard 5.NF.B.7: divide whole numbers by unit fractions.
Practice fraction division online with these free exercises - highly customizable!
Math Mammoth Fractions 2 -- self-teaching worktext teaching fraction multiplication and division:
More 5th grade math videos:
This lesson is part of the Math Mammoth Grade 5 curriculum:
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