5.4×1.8=
0.54×180=
9.72÷1.8=
1.34÷0.25=÷1=
2.8÷0.85○2.8 253.1÷0.1○253.1 ×10
÷=
5.4×1.2=
0.54×1.2=
6.3÷0.7=
6.3÷0.07=