## Ordinal numbers

Ordinal numbers is a word used to describe the numerical position of objects. For example, if some students participated in a running race we can order them as, ' first, second, third, and so on'. First denotes the child who completed the race first. Second marks the child who came second and so on.

Form:

Spelling of ordinal-number:

We have to just add 'th 'to the cardinal numbers.

Example:

• Six → Sixth
• Eleven → Eleventh
• Seven → Seventh
• Thirteen → Thirteenth
• Sixteen → Sixteenth

Exceptions:

• One → first
• two → second
• three → third
• five → fifth
• eight → eighth
• nine → ninth
• twelve → twelfth

While writing compound cardinal number in the form, only the last figure is written as an ordinal.

• 21st → twenty-first
• 375th &rarr: three hundred and seventy-fifth
• 1112th→ one thousand, one hundred and twelfth

 1st → First 11th → Eleventh 2nd → Second 12th → Twelfth 3rd → Third 13th → Thirteenth 4th → Fourth 14th → Fourteenth 5th → Fifth 15th → Fifteenth 6th → Sixth 16th → Sixteenth 7th → Seventh 17th → Seventeenth 8th → Eighth 18th → Eighteenth 9th → Ninth 19th → Nineteenth 10th → Tenth 20th → Twentieth

Titles:

While writing the names for Kings and Queens ordinal-numbers are written in Roman numbers. While saying (in spoken English)the definite article should be said before the ordinal-numbers.

• Charles II → Charles the Second
• .
• Edward IV → Edward the Fourth
• .

Ordinal numbers
Practical examples of using this topic

(i) My friend is waiting in 6th floor for me.

(ii) In this shopping mall you can find flower shop in the 1st floor

## Quote on Mathematics

“Mathematics, without this we can do nothing in our life. Each and everything around us is math.

Math is not only solving problems and finding solutions and it is also doing many things in our day to day life. They are: