5.NF.B.5: Interpret multiplication as scaling (resizing), by:

Also written as 5.NF.5

Interpret multiplication as scaling (resizing), by:

5.NF.B.5.aComparing the size of a product to the size of one factor on the basis of the size of the other factor, without performing the indicated multiplication.5.NF.B.5.bExplaining why multiplying a given number by a fraction greater than 1 results in a product greater than the given number (recognizing multiplication by whole numbers greater than 1 as a familiar case); explaining why multiplying a given number by a fraction less than 1 results in a product smaller than the given number; and relating the principle of fraction equivalence a/b = (n × a)/(n × b) to the effect of multiplying a/b by 1.

Khan Academy Resources

Fraction multiplication as scaling Dividing a unit fraction by a whole number Multiplication as scaling with fractions Fraction multiplication as scaling examples

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