Never make these mistakes in Chinese 91

Foreigners often make some strange mistakes in Chinese when they study the most difficult language— —Chinese. We try to analyze typical sentences to correct these errors.

          Jīnnián de chǎnliànɡ tíɡāo le zuǒyòu bǎifēnzhī shí.
False: 今年的产量提高了左右百分之十。
          Jīnnián de chǎnliànɡ tíɡāo le bǎifēnzhī shí zuǒyòu.
True: 今年的产量提高了百分之十左右。