计算:0.1+0.2+0.3+········+0.87+0.88+0.89

2025-01-19 11:36:53
推荐回答(4个)
回答1:

解:0.1+0.2+0.3+········+0.87+0.88+0.89

=(0.1+0.9)×9÷2+(0.10+0.89)×80÷2

=4.5+39.6

=44.1

回答2:

你好,题目有问题哦


因为前面是一位小数,后面是两位小数,也就是不存在规律

没法计算哦

请检查后追问我一下,我帮你解答

回答3:

0.01+0.02+0.03+········+0.87+0.88+0.89
(0.01+0.89)×89÷2
=0.9×89÷2
=80.1÷2
=40.05

回答4:

[(0.1+0.89)/2]*89=40.5