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7.5÷2.5=75÷25是根据


  1. A.
    小数的性质
  2. B.
    乘法分配律
  3. C.
    商不变性质
  4. D.
    乘法交换律和结合律
C
分析:根据商不变的性质,被除数和除数同时扩大或缩小相同的倍数(0除外),商不变;据此解答.
解答:根据商不变的性质,
7.5÷2.5=75÷25,被除数和除数都扩大了10,商不变;
故选:C.
点评:此题主要考查商不变的性质的应用.
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