Add by 10
Take away by 10
Surprise
Add
Subtract
100

2 + 10 =

28

100

12 - 10 =

2

100

17 - 5 =

12

100

12 + 4 =

16

100

10 - 4 =

6

200

12 + 10 =

22

200

20 - 10 =

10

200

20 + 10 =

30

200

16 + 5 =

21

200

15 - 2 =

13

300

17 + 10 =

27

300

25 - 10 =

15

300

20 - 10 =

10

300

21 + 7 =

28

300

29 - 7 =

22

400

29 + 10 =

39
400

36 - 10 =

26

400

52 + 7 =

59

400

46 + 3 =

49

400

35 - 5 =

30

500

55 + 10 = 

65

500

73 - 10 =

63

500

78 + 6 =

84

500

69 + 4 =

73

500

57 - 6 =

51