100÷1%=
25×0.7×4=
2﹣2÷3=
(-0.375)×5=
9÷=
8.07﹣0.7=
786﹣298=
×÷×=
-2.4x= 2.5:(5+2x)=:(x-1.2) =
0.25×32×12.5% ×[(-)÷] 98×