Bonjour,
Consigne : Ecrire les fractions avec 60 comme dénominateur
a) 19/20 = (19 x 3) / (20 x 3) = 57/60
b) 1/2 = (1 x 30) / (2 x 30) = 30/60
c) 2/3 = (2 x 20) / (3 x 20) = 40/60
d) 3/4 = (3 x 15) / (4 x 15) = 45/60
e) 7/15 = (7 x 4) / (15 x 4) = 28/60.
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Bonjour,
Consigne : Ecrire les fractions avec 60 comme dénominateur
a) 19/20 = (19 x 3) / (20 x 3) = 57/60
b) 1/2 = (1 x 30) / (2 x 30) = 30/60
c) 2/3 = (2 x 20) / (3 x 20) = 40/60
d) 3/4 = (3 x 15) / (4 x 15) = 45/60
e) 7/15 = (7 x 4) / (15 x 4) = 28/60.