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Write a description of how a diagram can help you solve 2x40

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To groups of 20 so you can count up and not have to time is it you do not know how to type
User Xplatforms
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well, lets say you were doing a rectangle model it can help you do or check your answer also the answer is 80 because 2 times 4 equals 8 and theres a zero so put those together you get 80 
User Terence Hill
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