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posted by 3rd grade on Tuesday, December 1, 2009 at 7:24pm.

what is the difference between a number sentence and an expression?

A neumber sentence has an equal sign, and is a sentence as long as it holds true ex true:3+7=10 False: 13+1=15 an expession does not have an equal sign ex: 3+4/5*3

Make a true sentence by inserting parentheses.4x9-2=28

4 x (9-2) = 28

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