can someone explain something about estimating?

Question

Can estimating be used when adding or subtracting negative numbers? Create an addition or subtraction problem using negative numbers and explain why estimating can be helpful.

Answer 1

Estimating works the same for negative numbers as it does for positive numbers. Just keep your sign relationships in mind
. -820 ≈ . -800
. -605 ≈ . -600
-1425 ≈ -1400