Question

Oblicz : a)-1/2*-8= b)-1/2:-8= c)2/3*-3/4= d)2/3:-3/4= Oblicz w pamięci: a)6*(-9)= b)(-4)*1/2= c)(-10)*1,5= d)(-2/3)*(-2/5)= e)(-18):3= f)2,2:(-2)= g)0,8*(-5)= h)(-9)*(-2/3)= i)(-3):(--1/3)=

Answer 1

a]-1/2*-8=8/2=4
b]-1/2:-8=1/16
c]2/3*[-3/4]= -3/6=-1/2
d]2/3:[-3/4]= -8/6=-1 1/3

 

a]6*[-9]= -54
b][-4]*1/2= -2
c][-10]*1,5= -15
d][-2/3]*[-2/5]= 4/15
e][-18]:3= -6
f]2,2:[-2]= -1,1
g]0,8*[-5]= -4
h][-9]*[-2/3]=6
i][-3]:[-1/3]=6