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If math describes how the world works, numbers are the alphabet that makes math possible. In this lesson, we will discover all about them.
What are numbers?
Numbers are symbols used to show the quantity or amount of things.
1-10
The following is a list of numbers one to ten:
- 1 → One
- 2 → Two
- 3 → Three
- 4 → Four
- 5 → Five
- 6 → Six
- 7 → Seven
- 8 → Eight
- 9 → Nine
- 10 → Ten
Now, let us take a look at some examples:
There is
There are
Warning!
Remember not to confuse 'three' with 'tree'. 'Tree' is the name of a green plant.
11-20
Now, take a look at the list of numbers 11-20:
- 11 → Eleven
- 12 → Twelve
- 13 → Thirteen
- 14 → Fourteen
- 15 → Fifteen
- 16 → Sixteen
- 17 → Seventeen
- 18 → Eighteen
- 19 → Nineteen
- 20 → Twenty
Here are some examples:
She can see
There are
Sam feels sad for that
21-29
To write numbers like 21, 22, etc. a hyphen (-) is placed between parts of the compound number. This rule is true for all compound numbers from 21 to 99.
- 21 → Twenty-one
- 24 → Twenty-four
- 27 → Twenty-seven
- 29 → Twenty-nine
Tip!
In English, a compound number like 35 is not read as thirty and five, but as thirty-five.
Multiples of 10
The list below shows the written form of multiples of 10, like 20, 30, 40, etc.
- 30 → Thirty
- 40 → Forty
- 50 → Fifty
- 60 → Sixty
- 70 → Seventy
- 80 → Eighty
- 90 → Ninety
- 100 → One Hundred
Now, let us take a look at an example:
There were around
Tip!
Do not confuse the pronunciation of some numbers. For example:
15 → fifteen: /ˌfɪfˈtiːn/
50 → fifty → /ˈfɪfti/
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