Numbers in English from 0 to 100
Do more with this exercise
Learn the numbers in English from 0 to 100. First learn 0 to 20, then the tens: thirty, forty, fifty. With these words, you can make every number to 100: twenty + one = twenty-one. Look at the number, read the word and the example, then do the exercises.
0–10
zero
The answer is zero.
one
The apple is one dollar.
two
The cats are two years old.
three
The pens are three dollars.
four
She is four years old.
five
Five friends are here.
six
The number six bus is late.
seven
Lucy is seven.
eight
Eight students are at home today.
nine
It is nine dollars.
ten
We are ten years old.
11–20
eleven
Tom is eleven.
twelve
The cake is twelve dollars.
thirteen
He is thirteen, not thirty.
fourteen
The answer is fourteen.
fifteen
The bus is fifteen minutes late.
sixteen
Anna is sixteen years old.
seventeen
They are seventeen.
eighteen
I am eighteen.
nineteen
The pizza is nineteen dollars.
twenty
Twenty people are at the party.
30–100
thirty
The teacher is thirty.
forty
He is forty years old.
fifty
She is fifty, not fifteen.
sixty
The number sixty bus is here.
seventy
She is seventy years old.
eighty
The hotel is eighty dollars a night.
ninety
The answer is ninety.
one hundred
The bike is one hundred dollars.
21–99
twenty-one
I am twenty-one.
thirty-five
The jacket is thirty-five dollars.
forty-two
The answer is forty-two.
ninety-nine
The shoes are ninety-nine dollars.
Practice exercises
Match the Numbers
Click a word, then click its number.
Choose a word on the left, then its match on the right.
Choose the Correct Number
Choose the correct word or number.
9.45 is ___.
10.She is 15. She is ___.
11.The book is 12 dollars. It is ___ dollars.
12.40 is ___.
13.100 is ___.
14.Eighty is ___.
Write the Number in Words
Write the number from the hint in words.
True or False
Decide if each sentence is true or false.
22.'Forty' and 'fourty' are both correct.
23.Fifteen is 15 and fifty is 50.
24.'One hundred' and 'a hundred' are both 100.
Numbers in English: the easy way to learn 0 to 100
Numbers are everywhere: prices, ages, phone numbers, buses. The good news is that you only need about 30 words for every number from 0 to 100. Learn 0 to 20, then the tens (thirty, forty, fifty, sixty, seventy, eighty, ninety) and one hundred.
The numbers from 13 to 19 end in -teen: thirteen, fourteen, fifteen. The tens end in -ty: thirty, forty, fifty. Some numbers change a little: three becomes thirteen and thirty, five becomes fifteen and fifty, and two becomes twenty. Learn these in pairs.
For 21 to 99, put the ten and the small number together with a hyphen: twenty-one, sixty-seven, ninety-nine. There is no and in the middle. For ages, say I am twenty-one or I am twenty-one years old.
Two things are easy to get wrong. First, the spelling of forty: no u. Second, the sound of pairs like fifteen and fifty: the strong part is at the end of fifteen and at the start of fifty. Do the exercises above to practise both.
Frequently asked questions
How do you write the numbers from 21 to 99 in English?
Say the ten, then the number from 1 to 9, with a hyphen (-) in the middle: twenty-one (21), thirty-five (35), forty-two (42), ninety-nine (99). Do not use and: 21 is twenty-one, not twenty and one.
Is it forty or fourty?
Forty. Four (4) and fourteen (14) have a u, but forty (40) does not. Fourty is a very common spelling mistake.
How can I hear the difference between fifteen and fifty?
Listen for the strong part of the word. In fifteen (15), the strong part is at the end: fif-TEEN. In fifty (50), the strong part is at the start: FIF-ty. It is the same for 13 and 30, 14 and 40, up to 19 and 90.
Do I say a hundred or one hundred?
Both are correct for 100. A hundred is very common in speaking. One hundred is common in writing and when the number is important, like prices.
How do you say 0 in English?
Zero is the usual word. In phone numbers, many people say oh, like the letter O: 305 is three-oh-five.
Do numbers take a plural -s?
The thing after the number takes -s: two books, ten dollars. The number word does not: one hundred, not one hundreds.
Answer key
1. thirteen
Answer: 13
Thirteen is 13. The teen numbers are 13 to 19.
2. thirty
Answer: 30
Thirty is 30. The tens end in -ty.
3. fourteen
Answer: 14
Fourteen is 14: four + teen.
4. forty
Answer: 40
Forty is 40. Note the spelling: forty, not fourty.
5. fifteen
Answer: 15
Fifteen is 15: fif + teen.
6. fifty
Answer: 50
Fifty is 50: fif + ty.
7. twelve
Answer: 12
Twelve is 12. It is not a teen number.
8. twenty
Answer: 20
Twenty is 20.
9. 45 is ___.
Answer: forty-five
45 is forty-five. Forty has no u, and fifty-four is 54.
10. She is 15. She is ___.
Answer: fifteen
15 is fifteen. Fifty is 50, and five is 5.
11. The book is 12 dollars. It is ___ dollars.
Answer: twelve
12 is twelve. Twenty is 20, and two is 2.
12. 40 is ___.
Answer: forty
40 is forty, with no u. Four and fourteen have a u, but forty does not.
13. 100 is ___.
Answer: one hundred
100 is one hundred or a hundred. Hundred has no -s after a number.
14. Eighty is ___.
Answer: 80
Eighty is 80. Eighteen is 18, and eight is 8.
15. Tom is ___ years old.
Answer: eleven
11 is eleven.
16. The bus is ___ minutes late.
Answer: twenty
20 is twenty.
17. He is ___, not thirty.
Answer: thirteen
13 is thirteen. Thirty is 30.
18. The shoes are ___ dollars.
Answer: thirty
30 is thirty. The tens end in -ty.
19. She is ___.
Answer: twenty-one
21 is twenty-one: twenty + one, usually with a hyphen (-).
20. The jacket is ___ dollars.
Answer: forty-eight
48 is forty-eight. Forty has no u.
21. The bike is ___ dollars.
Answer: one hundred
100 is one hundred or a hundred. Both are correct.
22. 'Forty' and 'fourty' are both correct.
Answer: False
Only forty is correct. Four has a u, but forty does not.
23. Fifteen is 15 and fifty is 50.
Answer: True
Fifteen ends in -teen (15). Fifty ends in -ty (50).
24. 'One hundred' and 'a hundred' are both 100.
Answer: True
Both are correct for 100. A hundred is very common in speaking.