basis: 2.2 en 2.3
7. a 2 van de 6 b 3 van de 6
c 5 van de 6 d 5/6 e 2/6 + 3/6 = 5/6
8. a 4st b 5 st c 9 st 9/10
9. 4/5
16. 2/3 en 5/8
17. b 4/4 c 1 van de 4 d 3/4 e 4/4 - 1/4 = 3/4
18. a 2/5 b 4 st c 3/5 d 10/10-4/10=6/10= 3/5
19. a 2/3 b 3/5 c 1/6 d 5/8 e 2/9 f 1/3
20. a 4/10 of 2/5 b 1/10 c 4/10 - 3/10 = 1/10
21. a 1/4 b 1/2 c 1/6 d 2/5
22. a 5/6 b 2/3 c 3/5 d 6/25
23. a 2/5 b 3/8 c 2/9
Plus: 1.6
1 a klas 1A Engels
2. a 1/3 b 2/3 c 2/9 d 4/7 e 1/5 f 3/5
3. a 1/2 b 7/10 c 4/7 d 1/3 e 1/3 f 3/8
g 9/24 h 7/19
4. a 5/6 b 4/15 c 11/ 21 d 1/24 e 5/14
f 1/24
5. a 8/48+18/48=26/48=13/24
b 4/24+9/24=13/24
c 45/54-6/45=39/45=13/18 d 15/18-2/18=13/18
6. a 1/2 b 11/24 c 19/40 d 19/36
7. 11/20
8. 1/12
9. 7/20