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July 7, 2015

Homework Help: 5th grade math (word problems)

Posted by Alex on Tuesday, April 23, 2013 at 5:25pm.

Problem: A receipe for 4 dozen cookies requires 1 1/2 cups of flour. How much flour is needed for 1 dozen?

work: 4 divided by 1 1/2 = 4/1 x 3/2 =
4/1 x 2/3 = 8/3 cups of flour

Can you explain why i don't need to change 4 dozen to 48 and then divide by 1 1/2?

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