Show:
Questions
Responses
Print
Addition
Subtraction
100
1 + 1?
2
100
2 - 1?
1
200
2 + 2?
4
200
14 - 10?
4
300
3 + 3?
6
300
16 - 8?
8
400
4 + 4?
8
400
20 - 10?
10
500
5 + 5?
10
500
30 - 10?
20