basis:
16. c 3/10 d 3/10
17. a 6/7 b 2 c 8/9 d 1 2/3
18. 4 liter
19. a 3/4 b 3 liter
20. a 3 b 12
21. a 800 b 240 c 21
22. 400 liter
23. 160 verkocht
24. 1/3 = 10 3/5 = 18 4/10 = 12
Plus:
1. a 6/3 = 2 b 4/5 c 10/3 = 3 1/3
d 18/4 = 4 1/2
2. a 4 liter b 4 c 5 d 15 e 5 en 15
3. a 2 2/5 b 1 5/7 c 2 2/3 d 2 e 2 6/7 f 9
4. a 9 b 8
5. a 8 en 2 2/3
b 8 + 8/3 = 8 + 2 2/3 =10 2/3
c 6/3 + 2/3 = 8/3 d 32/3 = 10 2/3
6. a 16 2/3 b 17
7. a 19 1/4 b 17 3/5
8. a 6 6/7 b 6 2/5 c 14 2/11 d 6 1/2 e 18 1/3 f 46
9. a 53 1/2 b 4 1/2