2.7×1.3=×0.13=×0.013=0.27×=0.027×=×=×=
68÷17=
720÷90=
350÷70=
560÷80=
4x=3.2
x=.
5-0.28= 2.7×30= 4.5÷9= 0.27÷0.3=