1/4 van 20 is ...
1/2 van ... is 5
1/3 van ... is 5
1/5 van 100 is ...
1/5 van ... is 5
1/2 van 60 is ...
1/7 van ... is 5
1/5 van 200 is ...
1/2 van 90 is ...
1/10 van 500 is ...
1/2 van 110 is ...
1/4 van ... is 15
1/2 van 130 is ...
1/10 van ... is 7
1/3 van ... is 25
1/4 van ... is 20
1/10 van 850 is ...
1/3 van ... is 30
1/10 van 950 is ...
1/10 van ... is 10
