Addition
Easy
Medium
Hard
Very hard
100

1+1

2

100

9+9

18

100

19+19

38

100

20+16

36

100

56+65

121

200

2+2

4

200

12+12

24

200

17+17

34

200

36+34

70

200

34+34

68

300

3+3

6

300

11+11

22

300

21+12

33

300

16+44

60

300

24+52

76

400

4+4

8

400

10+10

20

400

15+15

30

400

23+59

82

400

98+12

110

500

5+5

10

500

10+5

15

500

16+16

32

500

50+49

99

500

78+78

156

M
e
n
u