Homework Help: math

Posted by John on Tuesday, May 22, 2012 at 9:58pm.

Tia has 24 black or white buttons. She has 10 more white buttons than black buttons. How many white buttons does Tia have?

math - MathMate, Tuesday, May 22, 2012 at 10:00pm
Sum and difference problems can be solved mentally.
The bigger number is half of the 24+10=17 and the smaller number is half of 24-10 =7.

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