-0.5 * 40 = -20
-0.1 * (-3)=0.3
0.9*(-0.6)=-0.54
-0.04*(-10)=0.4
-1*3.2= -3.2
3.6*2=7.2
-10*0.1=-1
1/2×-4=-2
-0.5 * 40 = -20
-0.1 * (-3)=0.3
0.9*(-0.6)=-0.54
-0.04*(-10)=0.4
-1*3.2= -3.2
3.6*2=7.2
-10*0.1=-1
1/2×-4=-2