Fill in what you can and press Check. Nothing you type is sent anywhere.
1
(-88)+87=
2
(-81)+(-32)=
3
(-84)+(-55)=
4
(-10)+(-24)=
5
64+(-16)=
6
(-26)+(-56)=
7
10+(-24)=
8
(-76)+43=
9
(-50)+2=
10
(-15)+(-24)=
11
15+(-69)=
12
(-86)+4=
13
59+(-69)=
14
(-16)+(-43)=
15
46+(-82)=
16
(-27)+59=
17
(-53)+90=
18
(-84)+79=
19
(-98)+(-70)=
20
19+(-3)=
Answer key
What is in this set
The numbers in this set run from 2 to 99.
77% of them have exactly one negative.
23% 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 240 different ones, 100% — 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.