一个三位小数保留两位小数后是7.65,符合条件的三位小数有几个?是1还是9还是10?

问题描述:

一个三位小数保留两位小数后是7.65,符合条件的三位小数有几个?是1还是9还是10?

9哦
(7.654 - 7.645)÷0.001
=0.009÷0.001
=9(个)
7.645
7.646
7.647
7.648
7.649
7.651
7.652
7.653
7.654
一共9个

10个,7.650,7.651,7.652,7.653,7.654,7.645,7.646,7.647,7.648,7.649

7.651
7.652
7.653
7.654
7.645
7.646
7.647
7.648
7.649
是9个。

7.645
7.646
7.647
7.648
7.649
7.651
7.652
7.653
7.654
一共9个

(7.654 - 7.645)÷0.001
=0.009÷0.001
=9(个)