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Adding single digit #'s
Subtracting single digit #'s
Adding two digit #'s
Subtracting two digit #'s
Multiply single digit #'s
100

6+9=?

15

100

7-2=?

5

100

10+1=?

11

100

20-2=?

18

100

2x4=?

8

200

8+8=?

16

200

6-2=?

4

200

12+9=?

21

200

34-12=?

22

200

6x3=?

18

300

5+2=?

7

300

5-4=?

1

300
23+20=?

43

300

41-10=?

31

300

2x5=?

10

400

2+8=?

10

400

8-9=?

-1

400

21+13=?

34

400

25-57=?

-32

400

4x4=?

16

500

7+7=?

14

500

1-9=?

-8

500

68+34=?

102

500

66-(-1)=?

67

500

8x8=?

64