4gr math
posted by jojo .
round 64 to the nearest ten.
round 87 to the nearest ten. then
add the rounded numners.

4gr math 
Damon
64 is less than halfway between 60 and 70.
therefore 60
87 is more than halfway between 80 and 90.
therefore 90
I bet you can add 60 and 90.
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