Bonsoir,
2. Effectuer les calculs suivants :
I = (+ 10) – (+ 4)
I = 10 - 4
I = 6
J = (- 9) – (- 7)
J = - 9 + 7
J = - 2
K = (+ 22) – (- 8)
K = 22 + 8
K = 30
L = (- 17) – (+ 18)
L = - 17 - 18
L = - 35
3. Calculer astucieusement :
P = (- 11) + (+ 5) + (- 8) + (+ 7) + (+ 11) + (- 12)
P = - 11 + 5 - 8 + 7 + 11 - 12
P = - 11 + 11 - 12 - 8 + 5 + 7
P = - 20 + 12
P = - 8
Q = (- 5) + (- 15) + (+ 20) + (- 8) + (+ 4) + (+ 3)
Q = - 5 - 15 + 20 - 8 + 4 + 3
Q = - 5 - 15 - 8 + 20 + 4 + 3
Q = - 28 + 27
Q = - 1.
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Bonsoir,
2. Effectuer les calculs suivants :
I = (+ 10) – (+ 4)
I = 10 - 4
I = 6
J = (- 9) – (- 7)
J = - 9 + 7
J = - 2
K = (+ 22) – (- 8)
K = 22 + 8
K = 30
L = (- 17) – (+ 18)
L = - 17 - 18
L = - 35
3. Calculer astucieusement :
P = (- 11) + (+ 5) + (- 8) + (+ 7) + (+ 11) + (- 12)
P = - 11 + 5 - 8 + 7 + 11 - 12
P = - 11 + 11 - 12 - 8 + 5 + 7
P = - 20 + 12
P = - 8
Q = (- 5) + (- 15) + (+ 20) + (- 8) + (+ 4) + (+ 3)
Q = - 5 - 15 + 20 - 8 + 4 + 3
Q = - 5 - 15 - 8 + 20 + 4 + 3
Q = - 28 + 27
Q = - 1.