1. Numbers in written form
1= one
15= fifteen
2= two
16= sixteen
3= three
17=seventeen
4= four
18= eighteen
5= five
19= nineteen
6= six
7= seven
20= twenty
8= eight
30= thirty
9= nine
40= forty
10= ten
50= fifty
11= eleven
60= sixty
12= twelve
70= seventy
13= thirteen
80= eighty
14= fourteen
90= ninety