Show:
Addition 1
Subtraction 1
Addition 2
Subtraction 2
Addition 3
100

5 + 4

9

100

8 - 5 =

3

100

6 + 10 =

16

100

10 - 2 = 

8

100

4 + 8 =

12

200

10 + 7

17

200

10 - 4 = 

6

200

15 + 4 = 

19

200

14 - 5 = 

9

200

12 + 8 = 

20

300

20 + 30 

50

300

20 - 5 = 

15

300

43 + 21 = 

64

300

20 - 10 = 

10

300

40 + 30 =

70

400

45 + 42 = 

87

400

26 - 4 = 

22

400

70 + 40 =

110

400

32 - 4 = 

28

400

54 + 23 = 

77

500

235 + 300 = 

535

500

33 - 8 = 

25

500

543 + 200 =

643

500

55 - 20 = 

35

500

126 + 600 =

726