How do you spell the numbers 1 to 10 in Chinese?

Here are the numbers 1 to 10 in Mandarin Chinese, both in characters and pinyin (the romanization system):

1. 一 (yī)

2. 二 (èr)

3. 三 (sān)

4. 四 (sì)

5. 五 (wǔ)

6. 六 (liù)

7. 七 (qī)

8. 八 (bā)

9. 九 (jiǔ)

10. 十 (shí)