Show:
Single Didgit Addition
Single Didgit Subtraction
Multiplication
Doulbe Didget Addition
Double Didget Subtraction
100

2+2

4

100
2-1

1

100

2x2

4

100

10+10

20

100
20-18

2

200

3+5

8

200

4-4

0

200

3x2

6

200

11+10

21

200

18-13

5

300

6+3

9
300

7-4

3

300

4x5

20

300

12+13

25

300

44-20

24

400

9+2

11

400
8-5

3

400

8x8

64

400

31+15

46

400

99-88

11

500

7+6

13

500

9-4

5

500

9x7

63

500

88+12

100

500

78-69

9