Homework Help: math

Posted by jakie on Monday, November 2, 2009 at 8:32pm.

how can knowing the multiplication properties help you evaluate 5 x ( 20 x 63)

math - Reiny, Monday, November 2, 2009 at 9:29pm
By the Associative Property of Multiplication
5x(20x63)
= (5x20)x63
= 100x63
= 6300
math - lashantae, Wednesday, October 6, 2010 at 10:04pm
6300
math - Math Whiz, Sunday, October 28, 2012 at 12:06pm
It helps you by knowing that you can switch the numbers around to help make the problem easier. Instead of doing 20x63, make it easy and do 20x5 and then do the answer to 20x5 and multiply it by 63.

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