Correct

十八

/ shí bā /
Strokes

Definition

eighteen/18

Example

As a Numeral

eighteen

1
Shí
十八
de
niang
姑娘
duǒ
huā
  

Girls of eighteen are as charming as a flower.

2
Shí
jiā
shì
shí
十八
  

10 plus 8 makes/is 18.

3
shí
第十八

eighteenth

4
Dǎng
de
shí
十八

the 18th CPC National Congress

5
Shí
十八
fēnzhī
分之

one eighteenth