addition
subtraction
harder addition
harder subtraction
subtraction and addition
100
11
What is 5+6
100
2
What is 3-1
100
16
What is 12+4
100
3
What is 8-5
100
9
What is 1+8
200
11
What is 7+4
200
5
What is 8-3
200
16
What is 15+1
200
12
What is 14-2
200
3
What is 5-2
300
10
What is 9+1
300
8
What is 9-1
300
19
What is 18+1
300
14
What is 15-1
300
13
What is 5+8
400
7
What is 3+4
400
2
What is 6-4
400
20
What is 16+4
400
6
What is 10-4
400
5
What is 10-5
500
18
What is 9+9
500
0
What is 1-1
500
24
What is 13+11
500
0
What is 20-20
500
20
What is 10+10
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