Question

Which of the following would you round and estimate to a sum of 11?

4.25 + 8.103
3.41 + 8.051
4.89 + 7.431
3.65 + 7.992

Answer 1

3.41 + 8.051

Explanation:

3.41 rounded to the nearest whole number is 3, and 8.051 rounded to the nearest whole number is 8. If the tens place has a 5,6,7,8, or 9 in it, then the whole number rounds to the next number, anything below five stays the same. Ex.

3.587 rounds to 4, because the tens place has a 5.

8.208 stays the same, because the tens place has a 2, and 2 is below 5.