fractions
posted by steph .
a boy eats 1/3 and 1/2 of a pizza for himself. what fraction of the original pizza does he have left

1(1/3+1/2)=
Clearly, you need to add the fractions first, and then subtract that answer from 1.
http://www.aaastudy.com/fra66kx2.htm
from http://www.aaamath.com/
What do you get? 
I GOT 1/6

That's right!

THANK YOU

You're very welcome.
That second link I sent should help you with all kinds of math questions for several years!