Another math question?

Question

Another math question?
kay,the question is quotestimate the sum of ,,and quot.I tried adding them all to get the sum and the answer I got was .but it said it was incorrect.so obviously that isnt the way to figure out the sum of a group of numbers.so can you explain the correct way for me to do it?Dont just automatically give me the answer.I want an explanation first then the answer along with it.cause I dont get this th grade stuff.lol

Answer

Presuming its three numbers else you would have put a , in . Well also presume were estimating to s.brbrTake , , and brbrEstimate using , and just round to nearest , then add.brbrwhich would total.brbrVoila!