SOLUTION: give a rough estimate (by rounding off to nearest hundreds)and also a closer estimate (by rounding off to nearest tens)of the following: 439+334+4317?

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Question 744081: give a rough estimate (by rounding off to nearest hundreds)and also a closer estimate (by rounding off to nearest tens)of the following:
439+334+4317?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
439+334+4317

Nearest hundreds, 400 + 300 + 4300;
Easy to do in your head? 5000?