0.79乘0.46加7.9乘0.24加11.4乘0.079怎么简算,

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 03:46:35
0.79乘0.46加7.9乘0.24加11.4乘0.079怎么简算,

0.79乘0.46加7.9乘0.24加11.4乘0.079怎么简算,
0.79乘0.46加7.9乘0.24加11.4乘0.079怎么简算,

0.79乘0.46加7.9乘0.24加11.4乘0.079怎么简算,
经过观察可以发现,每个乘法式子里都包含乘数0.79的倍数,经过变换,可以把0.79提取出来,方法如下:
0.79*0.46+7.9*0.24+11.4*0.079
=0.79*0.46+0.79*2.4+1.14*0.79
=0.79*(0.46+2.4+1.14)
=0.79*4
=3.16

0.79×0.46+7.9×0.24+11.4×0.079
= 0.79×0.46+0.79×2.4+1.14×0.79
= 0.79×(0.46+2.4+1.14)
= 0.79×4
= 3.16

0.79×(0.46+2.4+1.14)=0.79×4=3.16