Find Fractions of a Collection

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Divide the total by the denominator to find one equal part. Multiply that part by the numerator to find the requested number of parts. Keep the whole collection the same.

Worked example

Three quarters of 20 buttons means splitting 20 into four groups of five, then taking three groups: 20 / 4 x 3 = 15.

Twenty buttons are separated into four groups of five. The first three groups have dark centers and are labeled selected, representing fifteen of twenty buttons. — One quarter is one group of five. Three quarters are three such groups, so three quarters of twenty is fifteen.

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