3.5÷0.7= 0.07÷3.5=
0.7÷35= 0.7÷3.5=
7÷0.35= 7÷0.35=
7÷3.5= 7÷35=
70÷3.5= 0.77÷1.1=
分析：根據(jù)小數(shù)除法口算的方法，以及商的變化規(guī)律進行求解即可．
解答：解：
3.5÷0.7=5 0.07÷3.5=0.02
0.7÷35=0.02 0.7÷3.5=0.2
7÷0.35=20 7÷0.35=20
7÷3.5=2 7÷35=0.2
70÷3.5=20 0.77÷1.1=0.7．
點評：被除數(shù)不變，除數(shù)縮小（或擴大）幾倍（0除外），商就擴大（或縮�。⿴妆�；
除數(shù)不變，被除數(shù)縮�。ɑ驍U大）幾倍（0除外），商就縮�。ɑ驍U大）幾倍．
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