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Look at the following examples to see how algebraic expressions can be used to represent word problems.

 

Expression Word Problem
a + 4 4 more than a
a - 4 4 less than a
4 - a a less than 4
 4a 4 times a
 a/4  a ÷ 4 or ¼ of a
 3a + 4  4 more than 3 times a
 a/2 - 6  6 less than half of a

 

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