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Ordinal Numbers

first place ribbon

We use ordinal numbers to talk about the "order" of things or to define a thing's position in a series.

Note that after the numeral or digit, we write the last two letters of the word. For example, we take the last two letters of first and add them to the digit 1 to make 1st.

first 1st
second 2nd
third 3rd
fourth 4th
fifth 5th
sixth 6th
seventh 7th
eighth 8th
ninth 9th
tenth 10th
eleventh 11th
twelfth 12th
thirteenth 13th
fourteenth 14th
fifteenth 15th
sixteenth 16th
seventeenth 17th
eighteenth 18th
nineteenth 19th
twentieth 20th
twenty-first 21st
twenty-second 22nd
twenty-third 23rd
twenty-fourth 24th
thirtieth 30th
thirty-first 31st
fortieth 40th
fiftieth 50th
sixtieth 60th
seventieth 70th
eightieth 80th
ninetieth 90th
hundredth 100th
hundred and first 101st
hundred and fifty-second 152nd
two hundredth 200th
thousandth 1,000th
millionth 1,000,000th
billionth 1,000,000,000th
trillionth 1,000,000,000,000th

Roman Numerals

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