如题所述
第1个回答 2020-03-13
简便计算过程方法如下
解:13x58
=13x(60-2)
=13x60-13x2
=780-26
=754本回答被网友采纳
解:13x58
=13x(60-2)
=13x60-13x2
=780-26
=754本回答被网友采纳
第2个回答 2020-03-13
简便计算
13x58
=13x(60-2)
=13x60-13x2
=780-26
=754
13x58
=13x(60-2)
=13x60-13x2
=780-26
=754
第3个回答 2020-03-13
13*58
=13*(50+8)
=13*50+13*8
=650+104
=754
=13*(50+8)
=13*50+13*8
=650+104
=754