686×99的简便计算
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![686×99的简便计算](/uploads/image/z/7142293-37-3.jpg?t=686%C3%9799%E7%9A%84%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
686×99的简便计算
686×99的简便计算
686×99的简便计算
686×99
=686×(100-1)
=686×100-686
=68600-686
=67914
686x100-686
686×100-686=68600-686=67914
686×(100-1)
=686×100-686
=68600-686
=67914
686X(100-1)=686X100-686X1=68600-686=67914