Basic Addition
Addition with Regrouping
Basic Subtraction
Find the missing number
100

10 +10

20

100

15+ 5

20

100

17 - 8

9

100

3 + 1= 2 + ?

2

200

15 +3

18

200

22 + 7

29

200

7 - 3

4

200

6 + ? = 5 + 4

3

300

7 + 6

13

300

37 + 4

41

300

30- 20

10

300

?- 2 = 12 - 5

9

400

9 + 9

18

400

66 + 9

75

400

20 - 13

7

400

10 - 5 = ? - 3

8

500

17 + 2

19

500

80 + 6

86

500

16 - 8

8

500

3 + 6 + 5= 3 + ?

11

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