Calcule des fractions.
4/20 de 80 =
3/5 de 25 =
5/2 de 18 =
3/4 de 16 =
4/8 de 40 =
2/4 de 16 =
32/16 de 64 =
4/9 de 81 =
15/5 de 40 =
13/12 de 36 =
18/4 de 36 =
3/4 de 120 =
3/10 de 50 =
3/9 de 27 =
6/7 de 49 =
4/7 de 28 =
12/5 de 40 =
12/6 de 18 =
12/12 de 16 =
3/9 de 27 =
Vérifier.
OK