Very easy
easy
Easy and little bit hard
Little hard
Very hard
100

17+10=?

27

100

30+40=?

70

100

20-?=9

11

100

2x9=?

18

100

4x8=?

32

200

9+30=?

39

200

17-3=?

14

200

30-4=?

26

200

1x4=?

4

200

9x9=?

81

300

8+32=?

40

300

42-3=?

39

300

1x3=?

3

300

1x5=?

5

300

6x4=?

24

400

30+20=?

50

400

70+20=?

90

400

1+16=?

17

400

2x6=?

26

400

8x4=?

32

500

50 +50=.

100

500

500-300=?

200

500

1x10=?

10

500

2x5=?

10

500

6x2=?

12

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