Show:
Additon
Addition 2
Subtraction
Subtraction 2
Addition and Subtraction
100

25 + 5

30

100

33 + 4

37

100

10 - 5

5

100

43 - 3

40

100

30 + 4

34

200

20 + 2

22

200

10 + 6

16

200

12 - 8

4

200

19 - 12

7

200

18 - 15

3

300

12 + 5

17

300

15 + 5

20

300

24 - 10

14

300

16 - 8

8

300

27 + 4

31

400

33 + 7

40

400

17 + 6

23

400

40 - 30

10

400

14 - 3 

11

400

35 - 7

28

500

16 + 8

24

500

34 + 8

42

500

27 - 9

18

500

19 -8 

11

500

22 + 10

32