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27×21+73×21=


  1. A.
    100×21
  2. B.
    73×42
  3. C.
    100×42
  4. D.
    27×42
A
分析:根据乘法分配律简便计算.
解答:27×21+73×21,
=(27+73)×21,
=100×21.
故选:A.
点评:考查了运算定律与简便运算,关键是灵活运用所学的运算律简便计算.
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