Question

3.5-3.53x0.5的简便方法怎样算,

3.5-3.53x0.5的简便方法怎样算,

Answer 1

原式＝3.5－（3.5＋0.03）*0.5
＝3.5*（1－0.5）＋0.03*0.5
＝3.53＊0.5
＝1.765

Answer 2

3.53-3.53x0.5
=3.53×（1-0.5）
=3.53x0.5
=1.765