Question

Estimate the sum to the nearest whole number

29.1 +78.9 + 41.5

Answer 1

when you estimate the sum to the nearest you add one number if the decimal is over 5. 29+79+42 = 150 

Answer 2

I rounded each number to the nearest whole number and added those.

29 + 79 + 42 = 150

If you add the original numbers you would get 149.5, which rounds to 150.