Réponses

2012-09-15T15:47:37+02:00
2012-09-15T15:57:41+02:00

A= 3.5+1.5 x 5+1

  = 3.5+ 7.5 + 1

  = 12

 

B= (3 + 1.5) x (5+1)

  = 4.5 x 6

  = 27

 

C= 18 - 15 ÷ 6 - 2 

  = 18 - 2.5 - 2

  = 13.5 

 

D= (18-15) ÷ (6-2) 

  = 3 ÷ 4

 = 0.75

 

E= 2.4 ÷ 3 + 5 x 1.4

  = 0.8 + 7

  = 7.8

 

F= 2.4 ÷ (3+5) x 1.4

  = 2.4 ÷ 8 x 1.4 

  = 0.3 x 1.4

  = 0.42