12÷1.1≈
12 ÷ 1.2=
12÷ 1.3≈
12÷1.4≈
12÷1.5=
12÷1.6=
12÷0.9≈
12÷0.8=
12÷0.7≈
12÷0.6=
12÷0.5=
12÷0.4=
0.72÷9=
0.8÷4=
7-0.45=
3.5÷0.7=
2.7÷0.9=
1÷0.25=
0.1÷0.05=
8.79×0=
0.85+1.61÷0.23
27.3÷1.2-8.8
0.8×1.08÷0.27
①4.25×0.24=
②2.52÷1.8=验算: