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1
2+(-2)=
2
(-4)+7=
3
(-12)+7=
4
(-4)+(-11)=
5
8+(-6)=
6
6+(-9)=
7
(-9)+8=
8
(-2)+9=
9
(-5)+(-9)=
10
8+(-11)=
11
(-4)+8=
12
(-11)+(-7)=
13
(-3)+3=
14
(-7)+8=
15
(-2)+8=
16
(-6)+2=
17
11+(-10)=
18
(-4)+(-12)=
19
5+(-9)=
20
(-8)+12=
Answer key
What is in this set
The numbers in this set run from 2 to 12.
70% of them have exactly one negative.
30% of them have a negative on both sides.
A careful solution takes 2 written steps on average.
The mistake this set invites most often, in 100% of the problems: the minus signs were ignored and the sizes added; two numbers with different signs move in opposite directions.
Answers are a whole number.
Drawing 240 problems from this page produced 160 different ones, 67% — so a sheet of 20 is a new sheet almost every time.
We would put this in front of a grade 6 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.