We can solve many fraction division problems where the divisor is a whole number using mental math, by thinking of equal sharing. For example, 6/8 divided by 3 can be framed as: "There is 6/8 of a pizza left, and three people share it evenly. How much does each one get?"

6/8 means six slices. So, each person gets two slices. Those slices are eighths, which means each person gets 2/8 (of the entire pizza).

After looking at those, we then divide unit fractions by a whole number. For example, we look visually at 1/2 divided by four. Half of a pie is divided into four further pieces. Each of these pieces is an eighth, so 1/2 divided by 4 is 1/8.

The second part of this lesson deals with fraction divisions we can solve with mental math by thinking how many times the divisor fits into the dividend:
   • Divide fractions: how many times does...  

Practice fraction division online with these free exercises - highly customizable!
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Math Mammoth Fractions 2 -- self-teaching worktext teaching fraction multiplication and division:
https://www.mathmammoth.com/fractions_2

More 5th grade math videos:
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This lesson is part of the Math Mammoth Grade 5 curriculum:
https://www.mathmammoth.com/complete/...