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4 Calcule mentalement les soustractions suivantes.
A = (-4,5) - (-6,7) = (.....) C = (+10,8) - (+8,8) = (.....)
E = (+9,5) - (+13) = (.....)
B = (+1,2) - (-7,1) = ( .........)
D = (-4,6) - (-4,3) = (........)
F = (-2,4) - (+3,7) = (........)

Sagot :

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Réponse :

Explications étape par étape :

A = (-4,5) - (-6,7) = 2.2

C = (+10,8) - (+8,8) = 2

E = (+9,5) - (+13) = -3.5

B = (+1,2) - (-7,1) = 8.3

D = (-4,6) - (-4,3) = -0.3

F = (-2,4) - (+3,7) = -6.1