And more / odd (余/有余)

Structure number + 余 + measure word ·（or）quantity + 有余

余 (yú) is inserted BETWEEN the number and the measure word to mean "-odd", "and more": 三十余人 = "thirty-odd people", 百余年 = "a hundred-odd years". It is the cultured stand-in for colloquial 多 (三十多人), written register and typical of high round figures (tens, hundreds, thousands). 有余, placed after, means "to spare", "more than enough": 绰绰有余 = "more than ample", 收入丰盈，养家有余 = "ample income, enough to support the family and then some". Genuine quantification, absent from HSK 1-5.

Examples

现xiàn场chǎng聚jù集jí了le三sān十shí余yú人rén。
Thirty-odd people had gathered at the scene.
这zhè座zuò古gǔ桥qiáo已yǐ有yǒu百bǎi余yú年nián历lì史shǐ。
This old bridge already has a hundred-odd years of history.
以yǐ他tā的de能néng力lì，应yìng付fù这zhè点diǎn工gōng作zuò绰chuò绰chuò有yǒu余yú。
With his ability, this bit of work is more than he needs.
今jīn年nián收shōu成chéng不bù错cuò，留liú种zhǒng之zhī外wài还hái绰chuò绰chuò有yǒu余yú。
This year's harvest was good: beyond seed grain, there's plenty to spare.

Levels are indicative: they follow the standard Chinese Grammar Wiki (AllSet Learning) progression, not an official HSK 3.0 mapping. We never assign levels by eye.

This point and the other 370, with audio on every example, inside Wanyu.