Write the ordinal numbers. 1. 4th 5. 11th 2. 3rd 6. 20th 3. 1st 7. 16th 4. 2nd 8. 12th

Here is the full written form of the ordinal numbers you listed:

1. 4th — fourth
2. 3rd — third
3. 1st — first
4. 2nd — second
5. 11th — eleventh
6. 20th — twentieth
7. 16th — sixteenth
8. 12th — twelfth

Spelling Notes

• Twelfth: Note that the "v" in "five" or "twelve" changes to an f before adding the suffix.
• Twentieth: For numbers ending in "y," the "y" changes to ie before adding th.
• First, Second, Third: These are irregular forms and do not follow the standard th suffix pattern.

Would you like me to provide the written forms for any other specific range of numbers?