document.write( "Question 835645: Describe how you can use mental math to find the product.
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Algebra.Com's Answer #503650 by jim_thompson5910(35256) $\"\"$ $\"About$

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15 x 20 = 300 (since 15 x 2 = 30, add a 0 to each side to get 15 x 20 = 300)\r
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\n" ); document.write( "\n" ); document.write( "15 x 5 = 75\r
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\n" ); document.write( "\n" ); document.write( "So 15 x 25 = 375 (add 300 and 75) \n" ); document.write( "

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