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

Q 2: What is the ordinal number for 3 three Third threeth

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

Q 4: What is the ordinal number for 15 Fifty Fifteen Fifteenth

Q 5: Fill in the pattern for ordinal numbers: Eleventh, Twelfth , Thirteenth, Fourteenth, ______. Fifteen Fourteenth Eighteenth Fifteenth

Q 6: What is the ordinal number for 20 Twenty Twelfth Twentieth

Q 7: Seven students ran a swimming race, the student that swam the fastest would be in the third place first place ones place second place

Q 8: The first ten ordinal numbers are: first second third fourth fifth sixth seventh eighth ninth and _____ ten tenth eleventh ninth

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!