Number Names
For Example
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.
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