basis: 2.3
19. a 1/5 b 12 stukjes
20. a 1/8 b 1/6
21. verdeel in 15 stukjes a 5 st b 9 st
c 1 van de 15 = 1/15
22. a 3/4 x 1/6 = 1/8 b 1/8
23. a 4 liter b 7,5 liter c 2,5 liter
24. 375 x 1/3 = €125,-
25. a 123,5 m b 628 liter c €450,- d €1,23 e 5,48 kg f €0,64
26. a €0,20 b €17,50
27. a 95 b 78
28 a €450.000,- b €800,-
Plus: 2.6
1. a pijl 1= -2 3/5 pijl 2= -1 3/10 pijl 3= 1/5
2. a 3 1/3 b 4 1/5 c -1 1/2 d -1 9/19 e 5/36 f 8/21
g -1 1/11 h 8/15
3. a 15 en 1 1/4 b 15+5/4=16 1/4 c12/4+1/4=13/4 5x13/4= 16 1/4
4. a 8 4/7 b 7 1/5 c 10 7/11 d -8 e 9 3/5 f -6 1/2
5. a 15+3/4+2 1/2+1/8= b 18 3/8 c 18 3/8
6. a 2 2/3 b 2 13/15 c 1 9/24 d -5 1/4 e -11 f 2 7/9
7. 7 1/2
8. a -1 b 1/3 c 1 1/2 d -2 1/3 e -5/6
9. 5/6