9.8乘3.4加6.8乘0.1怎么简便计算请写出来
问题描述：
9.8乘3.4加6.8乘0.1怎么简便计算请写出来
答
9.8x3.4+6.8x0.1=3.4x(9.8+2x0.1)=3.4x10=34
答
9.8*3.4+6.8*0.1=(9.8+0.68)*(3.4*0.68)=34
答
=9.8/2*(3.4*2)+6.8*0.1
=4.9*6.8+6.8*0.1
=6.8*5
=6.8*10/2
=34