Show:
Addition
Addition 2
Subtraction
Subtraction 2
HARD
100

1 + 0

1

100

25 + 9

34

100
4 - 3
1
100

20 - 8

12
100

76 - 8 = 

68

200
9 + 3
12
200

24 + 3

27

200
7 - 4
3
200

21 - 7

14

200

93 + 5 = 

98

300
15 + 3
18
300

25 + 7

32

300
11 - 3
8
300

26 - 4

22

300

88 - 5 = 

83

400
20 + 6
26
400

13 + 5

18

400
18 - 2
16
400

56 - 6

50

400

78 - 9 = 

69

500
29 + 7
36
500

23 + 7

30
500
19 - 4
15
500

63 - 8

55

500

99 - 8 = 

91