CARDINAL NUMBERS

A cardinal number tells "how many."
Cardinal numbers are also known as
"counting numbers," because they
show quantity.

 

 

ORDINAL NUMBERS

Ordinal numbers tell the order of things in
a set—first, second, third, etc. Ordinal
numbers do not show quantity. They only
show rank or position.

 

 

Ordinal Numbers from 1 through 1,000,000
1 st first 11 th eleventh 21 st twenty-first 31 st thirty-first
2 nd second 12 th twelfth 22 nd twenty-second 40 th fortieth
3 rd third 13 th thirteenth 23 rd twenty-third 50 th fiftieth
4 th fourth 14 th fourteenth 24 th twenty-fourth 60 th sixtieth
5 th fifth 15 th fifteenth 25 th twenty-fifth 70 th seventieth
6 th sixth 16 th sixteenth 26 th twenty-sixth 80 th eightieth
7 th seventh 17 th seventeenth 27 th twenty-seventh 90 th ninetieth
8 th eighth 18 th eighteenth 28 th twenty-eighth 100 th one hundredth
9 th ninth 19 th nineteenth 29 th twenty-ninth 1,000 th one thousandth
10 th tenth 20 th twentieth 30 th thirtieth 1,000,000 th one millionth