0.3×0.2=
12.5×4=
4.9÷0.01=
0.14×50=
0.75×10=
2.1÷100=
0.1÷10=
9.1÷1.3=
0.5×0.6= 0.16×0.5= 5.5×0.2= 3.5×3=
0.48÷6= 4.6÷23= 14×0.5= 0.72÷12=
①(2.7+3)x=57
②2.85+2.5x=15.35
③15.5-5x=5.5
0.2,0.6,0.4,0.8,0.6,1,0.8,,,1.4,1.2。