3rd grade math
posted by Alex .
Marcia said that if she estimates 73 x7, the product will be less than the exact answer. Is she correct? Explain.

I think:
it depends. If you round 73 and 7 then the estimate will be larger than the actual value(70*10=700 is larger than 73*7=511) if you on round 70 than the estimate will be smaller (70*7=490). 
521

what is this stipid answer

i am in 3erdgr I cant find the answer! can some on help the problem is: Marcia said that if she estimates 73 times 7 the product will be less than the exact answer. is she correct? Explain. ps you round the 73!