Cardinal numbers give information about how many people or things there are.
Decimals are the smallest of the numbers, being the result of fractions. Ten numbers go from 1 to 99. Hundred numbers go from 100 to 999.
Decimal numbers are the result of a fraction.
- They normally have a comma or a point between the whole number and the decimals.
Ten numbers have ten as its base. Despite, the numbers from 1 to 9 are commonly called unities.
- Plain form: number + 0
- They have specific names from 0 to 20
- From 20 to 99 the numbers follow a pattern to name them: Using a hyphen in between the ten number and the unit.
|Unities from 1 to 9||Tens from 11 to 19||Tens from 10 to 90||Tens + unities|
The hundred numbers have one hundred as its base.
- Plain form: number + 00
- Their name is: how the number in the beginning is called + hundred
- 100 can be called ‘one hundred’ or ‘a hundred’
- If there are more numbers after the hundred number, they need to be mentioned as normal (ten number). Sometimes, we use ‘and’ in between the hundred number and the ten number.
- From 100 to 999
|Hundreds from 100 to 900||Hundreds + Unities||Hundreds + Tens|
|one hundred||one hundred and one||one hundred and ten|
|two hundred||one hundred and two||one hundred and twenty|
|three hundred||one hundred and three||one hundred and thirty|
|four hundred||one hundred and four||one hundred and forty|
|five hundred||one hundred and five||one hundred and fifty|
|six hundred||one hundred and six||one hundred and sixty|
|seven hundred||one hundred and seven||one hundred and seventy|
|eight hundred||one hundred and eight||one hundred and eighty|
|nine hundred||one hundred and nine||one hundred and ninety|
- 567/100 = 5,67
- Five point sixty-seven
- 10 (ten)
- 25 (twenty-five)
- 100 (one hundred)
- 871 (eight hundred seventy-one)
We normally use the singular form of the numbers – when we are naming a concrete figure.
We use the plural form when we are not speaking about a concrete number, but in general terms. We don’t even use a whole number for that:
- Hundreds of + noun (“There were hundreds of adolescents in that party”)
In formal writing it is better to write the number in letters when it is a short figure.
External link to Cardinal numbers: Decimals, Tens and Hundreds exercises (1192).