basis en plus: 1.5
1. a 5/6 b 2 4/7
2. a 12 b 12 c 24
3. a 4 1/5 b 1 1/2 c 6/7 d 3 3/4 e -1 3/5 f -3 3/7 g -2 4/7 h 2 7/11
4. a 4 stukjes b 1/10 c 1/10
5. a 1/5 b -1/12 c 3/28 d -1/6 e 1/48 f 3/20
6. a 1/2 b. 7 1/4 c 4 d 3 4/5
7. a 1/4 b 9/25 c 4/49 d 1/9 e 25/64 f 9/100
8. a 6/7 x 2/3 = 4/7 b €3000,-
9. a 3/25 b 216 c 1200