Aide mois s'il vous plaît Calculer à la main.
1/2 x 3/4
5/6 x 7/8
3/10 x 11/4 2,3/8 x 0,5/3 2,5/3 x 40/7 10,4/9 x 0,1/5
1/2 x 3/4
5/6 x 7/8
3/10 x 11/4 2,3/8 x 0,5/3 2,5/3 x 40/7 10,4/9 x 0,1/5
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Réponse :
1/2 x 3/4 = (1 x 3) / (2 x 4) = 3 / 8 = 3 x 1/8 = 3 x 0,125 = 0,375
5/6 x 7/8 = (5 x 7) / (6 x 8) = 35/48
3/10 x 11/4 = 33/40 = 0,825
2,3/8 x 0,5/3 = 23/80 x 5/30 = 115/2400
2,5/3 x 40/7 = 100/21
10,4/9 x 0,1/5 = 1,04/45 = 104/4500