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

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- Post author By mpershan
- Post date September 14, 2012
- 1 Comment on Arithmetic with negative numbers

## 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.