7.5×1.17.5÷1.1
A.0.70 B.0.7011 C.0.701701…
2.4÷0.62.4 0.56÷0.10.56×100
8.7578.75 0.662÷3 30.6÷330.92727……
8.55 1.88÷1.011.88
0.730.73434…… 1÷0.3
2.45×0.980.98 1.24÷0.51.24 6.35÷1.016.35