1-10：first
second
third
fourth
fifth
sixth
seventh
eighth
ninth
tenth
11-20 eleventh
twelfth
thirteenth
fourteenth
fifteenth
sixteenth
seventeenth
eighteenth
nineteenth
twentieth
21-30
twenty-first
twenty-second
twenty-third
twetny-fourth
twenty-fifth
twenty-sixth
twenty-seventh
twenty-eighth
twenty-ninth
thirtieth
1 - one
2 - two
3 - three
4 - four
5 - five
6 - six
7 - seven
8 - eight
9 - nine
10 - ten
11 - eleven
12 - twelve
13 - thirteen
14 - fourteen
15 - fifteen
16 - sixteen
17 - seventeen
18 - eighteen
19 - nineteen
20 - twenty
21 - twenty-one
22 - twenty-two
23 - twenty-three
24 - twenty-four
25 - twenty-five
26 - twenty-six
27 - twenty-seven
28 - twenty-eight
29 - twenty-nine
30 - thirty