Divide a unit fraction by a whole number
The idea
A unit fraction has numerator 1; begin with that part of one whole.
Step by step
- A unit fraction has numerator 1; begin with that part of one whole.
- To divide 1/b into n equal shares, split that part into n smaller pieces: each is 1/(b × n).
- Multiply the size of one share by the number of shares to recover the starting fraction.
Example
A ribbon of length meter is shared into 3 equal pieces. How long is each piece?
Answer
m
Divide meter into 3 equal parts. Each is 1/(2 × 3) = meter. The 3 pieces together make meter.
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Fold half a paper strip into three equal pieces. Compare one small piece with the whole strip.
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