division
multiplication
subtraction
addition
pure easiness
100

12d3

4

100

27x6

162

100

67-45

22

100

27+32

59

100

1+7

8

200

85d17

5
200

34x7

238

200

78-90

-12

200

57+72

129

200

21+7

28

300

63d3

21

300

121x2

242

300

673-463

210

300

567+74

641

300

72+3

75

400

72d8

9

400

850x4

3400

400

985-956

29

400

872+673

1545

400

182+10

192

500

96d6

16

500

976x2

1952

500

978-56

922

500

164+98

262

500

1983+21

2004

M
e
n
u