Operations on Integers

Mathematics — First Preparatory

Common mistakes

Getting the sign of the product wrong. Negative × negative gives a positive result, not a negative one.
Forgetting that subtracting a negative number means adding. Writing 6 − (−4) = 2 instead of 10 is a common error.
Confusing (−3)² with −3². The first equals 9 and the second equals −9, because the power applies only to 3 in the second case.
Adding or subtracting before multiplying or dividing when evaluating an expression.

Operations on Integers · 6 / 7