0.79 ×0.46+7.9 ×0.24+11.4×0.079 怎样算简便

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/28 23:00:58
0.79 ×0.46+7.9 ×0.24+11.4×0.079 怎样算简便

0.79 ×0.46+7.9 ×0.24+11.4×0.079 怎样算简便
0.79 ×0.46+7.9 ×0.24+11.4×0.079 怎样算简便

0.79 ×0.46+7.9 ×0.24+11.4×0.079 怎样算简便
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

全换整数

收起

马上

0.79×0.46+0.79×10×0.24+0.79/10×11.4=0.79×(0.46+2.4+1.14)=0.79×4=3.16