facts
facts
100

2 times 1

2

100

4 times 2

40

200

10 times 5

50

200

7 times 9

63

300

7 times 5

35

300

20 times 3

60

400

2 times 10

20

400

30 times 5

150

500

2 times 40

80

500

10 times 10

100