Cardinal adjectives

units units tens hundreds
1   one 11   eleven 10  ten 100   one hundred
2   two 12   twelve 20   twenty 200   two hundred
3   three 13   thirteen 30   thirty 300   three hundred
4   four 14   fourteen 40   forty 400   four hundred
5   five 15   fifthteen 50   fifty 500   five hundred
6   six 16   sixteen 60   sixty 600   six hundred
7   seven 17   seventeen 70   seventy 700   seven hundred
8   eight 18   eighteen 80   eighty 800   eight hundred
9   nine 19   nineteen 90   ninety 900   nine hundred
thousands and millions
1,000  one thousand 10,000  ten thousand 100,000  one hundred thousand 1,000,000  one million
  US Germany, Spain, France, ...
1,000,000,000 billion thousand million (milliard)
1,000,000,000,000 trillion billion
1,000,000,000,000,000 quadrillion thousand billion (billiard)
1,000,000,000,000,000,000 quintillion trillion

Ejercicios

 1  Escribe el nombre de los siguientes números.

101

One hundred (and) one

65

Sixty five

22

Twenty two

4521

Four thousand five hundred and twenty one

87

Eighty seven

15

Fifteen

54

Fifty four

33

Thirty three

19

Nineteen

11

Eleven

 2  Completa las siguientes oraciones escribiendo el nombre de los siguientes adjetivos cardinales.

11 My cousin Anna is (13) years old.

thirteen

12 My house has (3) bedrooms.

three

13 This trousers costs (35) dollars.

thirty five

14 My dog had (5) puppies.

five

15 My brother has (4) guitars.

four

16 There are (545) students in the school this year.

five hundred and forty five

17 I bought (6) erasers, (18) pencils and (75) blocks.

(6) six / (18) eighteen / (75) seventy five

20 Dinosaurs went extinct about (65.000.000) years ago.

sixty five million