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Exercice 1Calculer les expressions suivantes en détaillant les calculs.A = 12 − (3 + 5)B = 7 × 8 + 13C = 12 × 13 + 8D = 5 + 11 × 4 + 3 ÷ 3 − 7E = 5 × 13 − 8 + 10 + 12 ÷ 12F = 11 ÷ 11 + 10 − 6 + 4 × 7G = 6 ÷ 6 + 7 × 5 − (5 + 9)H = 5 + 1,4 + 6 × 7 − 8,6I = 6,8 ÷ 6,8 + 7,7 × (5,1 + 8,7)

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ALEXIS9
Bonsoir,

A = 12 - 8 = 4
B = 56 + 13 = 69
C = 158 + 8 = 164
D = 5 + 44 + 1 - 7 = 43
E = 65 + 2 + 1 = 68
F = 1 + 4 + 28 = 33
G = 1 + 35 - 5 - 9 = 22
H = 6.4 + 42 - 8.6 = 39.8
I = 1 + 7.7 * 13.8 = 1 + 106.26 = 107.26

Bonne soirée !
A = 12-(3+5)
   = 12-8=4
B = 7x8+13
   =56+13=69
C = 12x13+8
   =156+8=164
D = 5+11x4+3:3-7
   = 5+44+1-7
   =43
E = 5x13-8+10+12:12
   = 65-8+10+1
  = 57+11=68
F = 11:11+10-6+4x7
   = 1+10-6+28
   =11-6+28=33
G = 6:6+7x5-(5+9)
   =1+35-14
   =22
H = 5+1,4+6x7-8,6
   =5+1,4+42-8,6
   =6,4+42-8,6=39,8
I = 6,8:6,8+7,7x(5,1+8,7)
   = 1+7,7x13,8
===1+106,26=107,26