5.3÷1.25.3 0.67÷0.80.67 0.452÷1.44.52÷14
0÷24.624.6 5.46÷61 9.34÷0.28.34÷0.2
3.6÷3=
2.8+1.6=
1÷8=
0.6×50=
9.8×8=
18.9-9.9=
0.36÷1.8=
5.4÷3=
68.4÷0.38=
8.5÷3.4=
3.25÷0.3=(用循环小数表示)
0.175÷0.25×4
18.5÷2.5÷4
187÷(3.54+15.16)