运用运算律巧算下面各题 43又13分之1除以7 4 - 知识问答

运用运算律巧算下面各题 43又13分之1除以7 46又9分之1除以5

1个回答

43又1/13÷7
=(42+1又1/13)×1/7
=(42+14/13)×1/7
=42×1/7+14/13×1/7
=6+2/13
=6又2/13
46又1/9÷5
=(45+1又1/9)×1/5
=(45+10/9)×1/5
=45×1/5+10/9×1/5
=9+2/9
=9又2/9

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