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Sagot :

Bonjour


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vertical :


1) 32 + 4 x (-5) = 32 - 20 = 12

-(-15/3) = 15/3 = 5


2) -0,25 x (-13) x 5 x (-4) x (-2) + 3

= -0,25 x (-4) x (-13) x 5 x (-2) + 3

= 1 x (-13) x (-10) + 3

= 130 + 3

= 133


(-1) x … x (-1) (118 facteurs, nombre pair donc revient à faire (-1) x (-1) = 1)


3) -18 - (6 x (-3))
= -18 + 18

= 0


(6 x 100) + 54

= 600 + 54

= 654


4) 9 x 1/3 = 3


-(-16/4) = 16/4 = 4

5) -99 x 4 = -396


5 - 7 + 18 - 4 - 5 + 1 = 24 - 16 = 8

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