45×(-) 25×3.2×125 ÷[×(-)]
3.6+0.4=
1÷20%=
10﹣0.95=
5.3b﹣1.3b=
×14=
+=
÷=
×12÷12×=
1.5÷0.05= 8÷0.001= 2.2+8= 31.9-3.09= 3×4÷3×4=
× = 5- + = × = 0.12= 1÷ - ÷1=