Negative Numbers The Number System

Arithmetic with negative numbers

Why is this mistake so attractive for students to make? If you saw this mistake in your classroom, what would your next step be?

One reply on “Arithmetic with negative numbers”

These are exactly the kinds of mistakes that I make– I just don’t notice that little negative dash all that well. It helps me to purposefully notice (or even circle) all the negative signs before starting, so I don’t forget about them. You could ask them to circle the negative signs before doing the work…it might either fix the problem or show you what they’re ignoring.

Comments are closed.