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### Grade 3 - Mathematics4.3 Ordinal Numbers Through One-Hundredth

Cardinal numbers are 1,2,3,4,5,6.........

Ordinal Numbers: 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 ninteenth 29th twenty-ninth 10th tenth 20th twentieth 30th thirtieth

Example:
What is the ordinal number for 30th.
This is written as Thirtieth.

Directions: Answer the following questions. Also write at least 10 examples of your own.
 Q 1: what comes next thiry-fifth, thirth-sixth, thirty-seventhirty-eighththirty-nineththirty-sixth Q 2: Ordinal number thirty-first is abbreviated as 31stFalseTrue Q 3: Ordinal number first is abbreviated as 1st.FalseTrue Q 4: Ordinal numbers give the place of something in order. For example June is the sixth month of the year. "Sixth" is an ordinal numbertrueFalse Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!