Show:
Single Digit Addition
Double Digit Addition
Single Digit Subtraction
Double Digit Subtraction
Surprise
100

5+3=

8

100

11+5=

16
100

7-4=

3

100

11-10=

1

100

8+2=

10

200

2+6=

8

200

17+9=

28

200

9-3=

6

200

15-6=

9

200

18+10=

28

300

7+4=

11

300

12+14=

26

300

8-5=

3

300

19-4=

15

300

20-6=

14

400

8+6=

14

400

16+14=

30

400

9-5=

4

400

24-6=

18

400

17+16=

33
500

9+8=

17

500

28+13=

41

500

10-6=

4

500

28-13=

15

500

31-15=

16