DUPONTA
Answered

Calculer astucieusement en utilisant la distributivité: F= 53 X 101 G= 17 X 6.76 - 17 X 1.76 H= 22.5 X 999 I= 123 X 188 + 123 X 12

Sagot :

F=53x101=53x(100+1)=53x100+53x1=5300+53=5353

G=17x6,76-17x1,76=17x(6,76-1,76)=17x5=17x10/2=170/2=85

H=22,5x999=22,5x(1000-1)=22,5x1000-22,5x1=22500-22,5=22477,5

I=123x188+123x12=123x(188+12)=123x200=123x2x100=246x100=24600