Question

round each number to the nearest whole number. what is the best estimate for the sum of 317.38+ 82.21

Answer 1

what is the estimate for the sum of 317.38+82.21?

4 or more let it rest.
5 or more let it sore.

right?

Answer 2

the rule for rounding is to go the nearest number. If the numbers you are trying to round is less than 5, then round down. If it is equal to or more than 5, round up. for these two numbers we would round down for both. when we add them we get 317+82=399