Mathématiques

Question

Bonjour ! Stp flemme mdr ​
Bonjour  ! Stp flemme mdr ​

2 Réponse

  • 4/5*5=4
    20*2/20=2
    5,4/6*6=5,4
    0,56/8*8=0,56
  • Bonjour

    Compléter mentalement :

    ... x 5 = 4

    ... = 4/5

    4/5 x 5 = 4

    20 x ... = 2

    ... = 2/20

    ... = 2/(2 x 10)

    ... = 1/10

    20 x 1/10 = 2

    ... x 6 = 5,4

    ... = 5,4/6

    ... = 54/60

    ... = (6 x 9)/(6 x 10)

    ... = 9/10

    9/10 x 6 = 5,4

    ... x 8 = 0,56

    ... = 0,56/8

    ... = 56/800

    ... = (7 x 8)/(100 x 8)

    ... = 7/100

    7/100 x 8 = 0,56