这些怎么巧算 0.64×9.9 0.99×1.001 1.02×4.75

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 09:08:03
这些怎么巧算0.64×9.90.99×1.0011.02×4.75这些怎么巧算0.64×9.90.99×1.0011.02×4.75这些怎么巧算0.64×9.90.99×1.0011.02×4.750

这些怎么巧算 0.64×9.9 0.99×1.001 1.02×4.75
这些怎么巧算 0.64×9.9 0.99×1.001 1.02×4.75

这些怎么巧算 0.64×9.9 0.99×1.001 1.02×4.75
0.64×9.9
=0.64×(10-0.1)
=0.64×10-0.64×0.1
=6.4-0.064
=6.336
0.99×1.001
=0.99×(1+0.001)
=0.99×1+0.99×0.001
=0.99+0.00099
=0.99099
1.02×4.75
=(1+0.02)×4.75
=4.75+0.02×4.75
=4.75+0.095
=4.845

抱歉啊,我不会简便算法~~~

你好:草摩樱铃 !
0.64×9.9
=0.64×(10-0.1)
=0.64×10-0.64×0.1
=6.4-0.064
=6.336
0.99×1.001
=0.99×(1+0.001)
=0.99×1+0.99×0.001
=0.99+0.00099
=0.99099
1.02×4.75
=(1...

全部展开

你好:草摩樱铃 !
0.64×9.9
=0.64×(10-0.1)
=0.64×10-0.64×0.1
=6.4-0.064
=6.336
0.99×1.001
=0.99×(1+0.001)
=0.99×1+0.99×0.001
=0.99+0.00099
=0.99099
1.02×4.75
=(1+0.02)×4.75
=1×4.75+0.02×4.75
=4.75+0.095
=4.845

收起

  0.64×9.9
  =0.64×(10-0.1)
  =0.64×10-0.64×0.1
  =6.4-0.064
  =6.336
  0.99×1.0001
  =0.99×1+0.99×0.0001
  =0.99+0.000099
  =0.990099
  1.02×4.75
  =(1+0.02)×4...

全部展开

  0.64×9.9
  =0.64×(10-0.1)
  =0.64×10-0.64×0.1
  =6.4-0.064
  =6.336
  0.99×1.0001
  =0.99×1+0.99×0.0001
  =0.99+0.000099
  =0.990099
  1.02×4.75
  =(1+0.02)×4.75
  =4.75+0.02×4.75
  =4.75+0.95
  =4.7
  希望能帮到你, 祝你学习进步,不理解请追问,理解请及时采纳!(*^__^*)

收起