Number Names

1. Recall how to write the numbers from 1 to 20:

1     one	11     eleven
2     two	12     twelve
3     three	13     thirteen
4     four	14     fourteen
5     five	15     fifteen
6     six	16     sixteen
7     seven	17     seventeen
8     eight	18     eighteen
9     nine	19     nineteen
10   ten	20     twenty

 

2. To write numbers from 21-99 in words, first write tens part, followed by a hyphen, and then write the ones part.

For example: Let's write 75 in words.

75 = 70 + 5

Tens	Ones
20     twenty	1     one
30     thirty	2     two
40     forty	3     three
50     fifty	4     four
60     sixty	5     five
70     seventy	6     six
80     eighty	7     seven
90     ninety	8     eight
	9     nine

 

So, 75 is written in word form as seventy-five.

 

Also, if the ones part is 0, then only tens part is written.

For example: 40 is written in word form as forty.