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Cardinal and ordinal numbers - English lesson

Cardinal and ordinal numbers

Cardinal numbers tell quantities. Ordinal numbers tell the rank of something.

Example :

Four presidents were elected in the USA before 1817. The first president was George Washington.

'Four' is a cardinal number.

'The first' is an ordinal number.

➡️ I) Cardinal numbers:

If you need some help to write numbers: test

Hundred, thousand, million, billion ... don't change when there is a number before.
They are in the plural form when they are used with a noun and "of".

Three thousand people.

Thousands of people.

How to pronounce special numbers:

1.754 = one point seven five four.

5,353.5 = five thousand three hundred and fifty-three point five.

0 is read 'nought' OR 'zero' :

0.02 = nought point nought two ou zero point zero two

1a/ How to read the zero:

Measures: 3 degrees above zero.

Phone numbers, room numbers, dates: use the letter 'O'.

1b/ Percentages :

25% = twenty-five per cent.

100% = a hundred per cent.

200% = two hundred per cent.

3.75% = three point seven five per cent.

1c/ Years:

1945 = nineteen forty-five.

2010 = two thousand and ten/twenty ten

➡️ II) Ordinal numbers:

1^st first	11^th eleventh	10^th tenth	100^th hundredth
2^ndsecond	12^th twelfth	20^thtwentieth	1,000^th thousandth
3^rd third	13^th thirteenth	30^th thirtieth	1,000,000^th millionth
4^th fourth	14^th fourteenth	40^th fortieth
5^th fifth	15^thfifteenth	50^th fiftieth
6^th sixth	16^thsixteenth	60^th sixtieth
7^th seventh	17^thseventeenth	70^th seventieth
8^th eighth	18^theighteenth	80^th eightieth
9^th ninth	19^thnineteenth	90^th ninetieth

The first time.

➡️ III) Fractions:

1/5 = one fifth

2/3 = two thirds

1/25 = one twenty-fifth

Caution: 1/2 = one/a half and 1/4 = one/a quarter

➡️ IV) Dates:

Several ways to write them:

14 July 1789; July 14th 1789; 14th July 1789; July 14, 1789.

How to pronounce:

- The fourteenth of July, seventeen eighty-nine.

- July the fourteenth, seventeen eighty-nine.

Exercise :

Write down these numbers. Example:2.53 = two point five three

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