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17 On sait que 2 X3 X5 x 7 = 210. Sans faire de
calculs supplémentaires, recopier et compléter.
a. (-2) x (-3) (-5) (-7) = ...
b. (+2) x (+3) x (-5) x (+7) = ...
c. (+2) x (-3) x (-5) x (-7) = ...
d. (-0,2) x (+3) × (-0,5) x (-0,7) =
Merci

Sagot :

Réponse:

a. 210

b. -210

c. -210

d. -0,21

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