A1 English GrammarNumbers 1-100
Learn to count from 1 to 100 in English. Master cardinal numbers for everyday situations like shopping, telling time, and giving your phone number.
1Numbers 1-20
The numbers 1-12 are unique words that must be memorized. Numbers 13-19 follow a pattern: the unit + 'teen'. Note the spelling changes: thirteen, fifteen, eighteen.
Numbers 1-20
| 1-10 | 11-20 |
|---|---|
| 1 - one | 11 - eleven |
| 2 - two | 12 - twelve |
| 3 - three | 13 - thirteen |
| 4 - four | 14 - fourteen |
| 5 - five | 15 - fifteen |
| 6 - six | 16 - sixteen |
| 7 - seven | 17 - seventeen |
| 8 - eight | 18 - eighteen |
| 9 - nine | 19 - nineteen |
| 10 - ten | 20 - twenty |
Examples
I have two brothers.
I have two brothers.
number 2
She is fifteen years old.
She is fifteen years old.
number 15
There are twelve months in a year.
There are twelve months in a year.
number 12
2Tens (20-90)
The tens follow a pattern: the unit + 'ty'. Note spelling changes: twenty, thirty, forty (no u!), fifty, eighty (one t). For numbers 21-99, combine the ten and unit with a hyphen.
Tens
| Number | Word |
|---|---|
| 20 | twenty |
| 30 | thirty |
| 40 | forty |
| 50 | fifty |
| 60 | sixty |
| 70 | seventy |
| 80 | eighty |
| 90 | ninety |
| 100 | one hundred |
Examples
My grandfather is seventy-five years old.
My grandfather is seventy-five years old.
75 = seventy-five
The book costs forty-two dollars.
The book costs forty-two dollars.
42 = forty-two
There are thirty days in September.
There are thirty days in September.
number 30
3Using Numbers
Numbers are used for prices, ages, quantities, addresses, phone numbers, and time. For phone numbers, say each digit separately. For prices, use 'dollars/pounds/euros and cents/pence'.
Examples
My phone number is 555-1234.
My phone number is five five five, one two three four.
say digits separately
That costs $19.99.
That costs nineteen dollars and ninety-nine cents.
price
I live at 42 Oak Street.
I live at forty-two Oak Street.
address
The meeting is at 3:30.
The meeting is at three thirty.
time
4Zero and Oh
Zero has several names in English. Use 'zero' for temperature and mathematics, 'oh' for phone numbers and years, 'nil' for sports scores in British English, and 'nothing' or 'nought' in some contexts.
Examples
The temperature is zero degrees.
The temperature is zero degrees.
zero for temperature
My room number is 502.
My room number is five oh two.
oh in room numbers
The score is 2-0.
The score is two nil. / The score is two zero.
nil (UK) or zero (US) for sports