When objects are placed in order we use ordinal numbers to address each object.

Such numbers are called ordinal numbers.

1st

first

11th

eleventh

21st

twenty-first

2nd

second

12th

twelfth

22nd

twenty-second

3rd

third

13th

thirteenth

23rd

twenty-third

4th

fourth

14th

fourteenth

24th

twenty-fourth

5th

fifth

15th

fifteenth

25th

twenty-fifth

6th

sixth

16th

sixteenth

26th

twenty-sixth

7th

seventh

17th

seventeenth

27th

twenty-seventh

8th

eighth

18th

eighteenth

28th

twenty-eighth

9th

ninth

19th

nineteenth

29th

twenty-ninth

10th

tenth

20th

twentieth

30th

thirtieth

Example:
What is the ordinal number for 15th.
This is written as Fifteenth. Answer: Fifteenth Directions: Answer the following questions. Also write at least ten examples of your own.

Q 1: What is the ordinal number for 20 Twenty Twentieth Twelfth

Q 2: What is the ordinal number for 2 two tooth Second

Q 3: What is the ordinal number for 14 Fourteen Fourteenth Forty

Q 4: Fill in the pattern: Fifteenth Sixteenth Seventeenth Eighteenth Nineteenth _________ Twenty Nineteenth Twentieth Eighteenth

Q 5: What is the ordinal number for 15 Fifteenth Fifteen Fifty

Q 6: The first ten ordinal numbers are: first second third fourth fifth sixth seventh eighth ninth and _____ ten tenth ninth eleventh

Q 7: Fill in the pattern for ordinal numbers: Eleventh, Twelfth , Thirteenth, Fourteenth, ______. Fifteen Eighteenth Fifteenth Fourteenth

Q 8: When objects are placed in order we use ordinal numbers to tell their position. False True

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Question 10: This question is available to subscribers only!