Question

Calculati(folosind convenabil proprietatile inmultirii):
a) (-5)·(-12)·(+2)
b) 250·(-7)·(-3)·(+4)
c) (-250·(+101)
d) (-34)·(- 1 001)

Answer 1

a) (-5).(+2).(-12)=-10.-12=120

b) 250.4.-7.-3=1000.-21= - 2100

c) -250.(100+1)=- 250.100 -250=-25000-250= - 25250

d)  - 34 . -1001 = -34. (-1000-1) = 34000+34=34034