Show:
addding
Subtraction
adding
Subtraction
adding
100

45+5 =

10

100

41-4 =

37

100
52+3 =

55

100

12+12

24

100

14+14 =

28

200

15+1 =

What is 16

200

70-7 =

63

200

0+0 =

What is 0

200

1+1=

 2

200

3+3 =

6

300

4+4 =

 8

300

5-5 =

0

300

6+6 =

 12

300

7+7=

14

300

8+8 =

16

400

9+9 =

18

400

10-1 =

9

400

20+0 =

20
400

30+3 =

33

400

40+4 =

44

500

60+6 =

 66

500

20-10 =

10

500

30+3 =

33

500

40+10 =

50

500

60+5=

65