Question

(Re-Post) Hey! i really need your help, i´m rusty on rounding and would like to know how to answer these for my daily math pages :

Round each number to the nearest 10 Then SUBTRACT. 701-299 is about ____
Round each number to the nearest 10 Then SUBTRACT. 268-53 is about ____
Round each number to the nearest 10 Then ADD. 51+250 is about ____

Answer 1

1. 400 2. 220 3. 300

Explanation:

1. 701 to the nearest ten is 700 and 299 is 300 then subtract.

2. 268 rounds to 270 and 53 to 50.

3. 51 rounds to 50 and 250 stays the same.

The way you do this is by looking at the tens place and see is the number is 1,2,3,4 round down 1 number but if the number in the tens place is

5,6,7,8, or 9 you round up