约等于是这么表达的吗？

swimmingfrog

问what is the hundreds digits of the interger z

条件2： z rounded to the nearest hundred is 9300

是说z约等于9300 吗

重剑无锋

近似到百位，是的

爱维的天

同意重剑无锋,但要提醒樓主,round to,應該是"近似",而不是"約等於",以中文來看,好像有些不同...

sweetdream

好像可以理解为四舍五入(韦伯字典好像是这样解释的)到第几位，‘what is the hundreds digits of the interger z, 条件2. z rounded to the nearest hundred is 9300’就是把十位数及以后的全部不要了，只保留到百位数。

Round:

Merriam-Webster's Dictionary的解释：to express as a round number   often used with off *11.3572 rounded off to two decimal places becomes 11.36*

Longman Dictionary的解释：3、to change an exact figure to the nearest whole number
round something ↔ off to
例句：Prices are rounded off to the nearest dollar.

round somebody/something ↔ up phrasal verb
3、to increase an exact figure to the next highest whole number
see also round down

dadada007

对，round to 是四舍五入的意思，我在前一个月的时候，浏览郑青山的数学看到的

swimmingfrog

非常感谢楼上的几位，明白了！