(-5)*(-6)=___( )= ____(-3/2)*1/6=___( )= _____(-3/5)*(-5/3)=___( )=____= 8*(-1.25)= ___( )=_____

问题描述:

(-5)*(-6)=___( )= ____
(-3/2)*1/6=___( )= _____
(-3/5)*(-5/3)=___( )=____
= 8*(-1.25)= ___( )=_____

(-5)*(-6)=+(5*6)=30
(-3/2)*1/6=-(3/2*1/6)=-1/4
(-3/5)*(-5/3)=+(3/5*5/3)=1
8*(-1.25)=-(8*1.25)=-10