1. Cardinal and ordinal numbers
Salvador Orquín
IES Escola Industrial
Sabadell

2. Cardinal numbers 10 TEN 11 ELEVEN 12 TWELVE 0 OH / ZERO 1 ONE 2 TWO
3 THREE
4 FOUR
5 FIVE
6 SIX
7 SEVEN
8 EIGHT
9 NINE
10 TEN
11 ELEVEN
12 TWELVE

3. Teen numbers 13 THIRTEEN 14 FOURTEEN 15 FIFTEEN 16 SIXTEEN
17 SEVENTEEN
18 EIGHTEEN
19 NINETEEN

4. TY numbers (tens) 20 TWENTY 30 THIRTY 40 FORTY 50 FIFTY 60 SIXTY
70 SEVENTY
80 EIGHTY
90 NINETY

5. Remember:
My daughter is eighteen years old and her grandmother is eighty. 18 80

6. We write the tens and the units, separated by a hyphen.
21 TWENTY-ONE
32 THIRTY-TWO
55 FIFTY-FIVE
97 NINETY-SEVEN

7. 100
ONE HUNDRED or
A HUNDRED

8. After hundred you need and
108 A hundred and eight
213 Two hundred and thirteen
390 Three hundred and ninety
666 Six hundred and sixty-six

9. 1000
A THOUSAND or
ONE THOUSAND

10. After thousand you need a comma
1004 One thousand, four
1118 One thousand, one hundred and eighteen
3500 Three thousand, five hundred
6894 Six thousand, eight hundred and ninety-four

11.
A MILLION or
ONE MILLION

12.
FIVE MILLION
Millions IS WRONG

13. Listen to the numbers and repeat
Learn English numbers:

14. Let’s write some numbers.68 19 23 40 91
104
222
739
1215

15. …and
6430
12900
35827
115582

16. Ordinal numbers FIRST SECOND THIRD FOURTH FIFTH SIXTH SEVENTH EIGHTH
NINTH
TENTH
Ordinal numbers ending:
1……..st
2……..nd
3……. rd
Except:
11 eleventh
12 twelfth
13 thirteenth
21… st, 22..nd, 23..rd..
Others….. th

17. Ordinal numbers follow the same rule as cardinal numbers.
15th fifteenth
20th twentieth
21st twenty-first
22nd twenty-second
23rd twenty-third
24th twenty-fourth
32nd thirty-second
55th fifty-fifth
61st sixty-first

18. Ordinal numbers are used with dates
Today is December
We’ll say: ‘today is December the eighth two thousand nine.’ or ‘today is the eighth of December two thousand nine.’