This PowerPoint explains what happens when you multiply a whole number by a fraction less than one, equal to one, and greater than one. The presentation is very simple with text and animation to indicate correct answers. It supports the Common Core Standard 5.NF.5b:
Explain 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.
There is detailed instructional slides and then practice problems with explanations.