Bonjour,
6)
Fraction h 1/2 1/3 2/3 1/4 3/4 2/5 3/10 7/12
Min 30 20 40 15 45 24 18 35
60 min dans 1 h
1/2 x 60 = 60/2 = 30
1/3 x 60 = 60/3 = 20
2/3 x 60 = 120/3 = 40
1/4 x 60 = 60/4 = 15
3/4 x 60= 180/4 = 45
2/5 x 60 = 120/5 = 24
3/10 x 60 = 180/10 = 18
7/12 x 60 = 420/12 = 35
Fraction jour 1/8 1/6 1/4 1/3 1/2 2/3 3/2
Nbre heures 3 4 6 8 12 16 36
24 h dans 1 jour
1/8 x 24 = 24/8 = 3
4 x 6/1 = 24
1/4 x 24 = 24/4 = 6
8 x 3/1 = 24
12 x 2/1 = 24
2/3 x 24 = 48/3 = 16
3/2 x 24 = 72/2 = 36
7)
7/3 x 30 = 210/3 = 70.
