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How do you multiply 99 * 3456

 Jul 17, 2020
 #1
avatar+30929 
+2

If you mean to do it in your head, then multiply 3456 by 100 and then subtract 3456.

 Jul 17, 2020
 #2
avatar+1130 
+3

We can pretend that 99=100-1 and plug it in to get (100-1)*3456 then we use the associative property of multiplication to get 100*3456-356=345600-3456 and we get 342144

 Jul 17, 2020

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