Bonjour
classez les fractions par ordre croissant :
2/3 3/4 2/5 65/100 5/7
3/4 = (3 x 25)/(4 x 25) = 75/100 = (75 x 21)/(100 x 21) = 1575/2100
2/5 = (2 x 20)/(5 x 20) = 40/100 = (40 x 21)/(21 x 100) = 840/2100
65/100 = (65 x 21)/(21 x 100) = 1365/2100
2/3 = (2 x 7)/(3 x 7) = 14/21 = (14 x 100)/(21 x 100) = 1400/2100
5/7 = (5 x 3)/(7 x 3) = 15/21 = (15 x 100)/(21 x 100) = 1500/2100
840 < 1365 < 1400 < 1500 < 1575
Donc :
2/5 < 65/100 < 2/3 < 5/7 < 3/4
