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### Grade 2 - Mathematics5.7 Ordinal Numbers

Explanation

1. When objects are placed in order we use ordinal numbers to address each object.
2. 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.

Directions: Answer the following questions. Also write at least ten examples of your own.
 Q 1: What is the ordinal number for 20TwentiethTwelfthTwenty Q 2: Fill in the pattern for ordinal numbers: Eleventh, Twelfth , Thirteenth, Fourteenth, ______.EighteenthFourteenthFifteenthFifteen Q 3: When objects are placed in order we use ordinal numbers to tell their position.TrueFalse Q 4: Seven students ran a swimming race, the student that swam the fastest would be in thesecond placefirst placethird placeones place Q 5: What is the ordinal number for 3threethreethThird Q 6: What is the ordinal number for 2Secondtoothtwo Q 7: What is the ordinal number for 29twenty nintytwenty ninthtwenty nine Q 8: What is the ordinal number for 1Firstonethone Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!