Respuesta :

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 
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?