Show:
Easy Integer Addition
Easy Integer Subtraction
Hard Integer Addition
Hard Integer Subtraction
Double Negatives
100
7+8=
What is 15?
100
12-8=
What is 4?
100
-6 + 9=
What is 3?
100
8 - 9=
What is -1?
100

3 - (-4)

7

200
-13+ (-8)=
What is -21?
200
-3 - 4=
What is -7?
200
2 + (-10)=
What is -8?
200
-14 - 12=
What is -26?
200
10 - (-10)

20

300
9 +16=
What is 25?
300
9 - (-4 )=
What is 13?
300
-14 + 16=
What is 2?
300
12- (-9)=
What is 21?
300

-7 - (-4)

-3

400
-5 + (-9)+
What is -14?
400
-6 -5=
What is -11?
400
6 + -17=
What is -11?
400
3 - 18=
What is -15?
400

-9 - (-10) 

1

500
-46 + (-10)=
What is -56?
500
-12 -9=
What is -21?
500
-19 +2=
What is -17?
500
6- (-4)=
What is 10?
500

-45 - (-16)

-29