Show:
Questions
Responses
Print
Addition
subtraction
100
35+10
45
100
35-10
25
200
32+9
41
200
32-9
23
300
5+2+9+3
20
300
14-9-2-3
0
400
409+34
445
400
409-34
375
500
672+94
766
500
672-94
578