7.186×1.45+1.69×7.186+3.14×2.186（怎样简便怎样算

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/07/17 21:02:22

7.186×1.45+1.69×7.186+3.14×2.186（怎样简便怎样算
7.186×1.45+1.69×7.186+3.14×2.186
166又1/20÷41

7.186×1.45+1.69×7.186+3.14×2.186
=7.186x(1.45+1.69)+3.14x2.186
=7.186x3.14+3.14x2.186
=3.14x(7.186+2.186)
=3.14x9.372
=29.42808
166又1/20÷41
=(164+41/20)÷41
=164÷41+41/20÷41
=4+1/20
=4.05

7.186×1.45+1.69×7.186+3.14×2.186（怎样简便怎样算怎样简便怎样算怎样简便怎样算, 怎样简便怎样算（）简便运算怎样算, 怎样简便算? 怎样简便算计算这道题,怎样简便就怎样算怎样简便就怎样算. 小学四年级用怎样简便怎样算, 99乘以63怎样简便怎样算怎样简便怎样算：求解175*99