The **sum** of more that two numbers can be found by **adding**

each column from right to left, starting with the ones place.

First, add the ones column (8 + 8 + 2 = 18). Write the 8 in the ones place of the

sum, and carry the 1 to the

tens column.

Then, add the tens column (

1 + 9 + 8 = 18). Write the 18 in the

sum.