Question

Estimate the sum to the nearest tenth: (-2.678) + 4.5 + (-0.68)

Answer 1

(-2.678) + 4.5 + (-0.68)= 1.142
since .1 is in the tenth place and 42 isnt greater than 50, the answer would be 1.1. 

Answer 2

The best thing that would first be done in the aspect would be to first sum up the numbers that are in parenthesis.

Let's keep in mind that a (-)+(-) would equal a positive. This would mean that a negative number, plus another negative number would then be a positive number.

Your answer: 1.14200