9÷0.125 =（9x8）÷（0.125x8） =72÷1 =72
9÷0.125 =9x (1000/125) =9x 8 =72
1.2÷0.125 =（1.2×8）÷（0.125×8） =9.6÷1 =9.6
9/0.125 =9*8 =72 =0.93×(1+0.01) =0.93×1+0.93
解：依题意得算式， 9÷0.125 =9×1÷0.125 =9×（1÷0.125） =9×8
0.8÷0.125 =（0.8×8）÷（0.125×8） =6.4÷1 =6.4
利用0.125×8=1，
5.4/0.125 = 43.2
8.25÷0.125 =8.25/(1/8) =8.25*8 =8.25*4*2 =33*2
用简便方法计算3.91÷0.125+6.09÷0.125 =3.91÷1/8+6.09÷1/8 =3