1/one: uno

2/two: dos

3/three: tres

4/four: cuatro

5/five: cinco

6/six: seis

7/seven: siete

8/eight: ocho

9/nine: nueve

10 ten: diez

11 eleven: once

12 twelve: doce

13 thirteen: trece

14 fourteen: catorce

15 fifteen: quince

16 sixteen: dieciséis

17 seventeen: diecisiete

18 eighteen: dieciocho

19 nineteen: diecinueve

20 twenty: veinte

21 twenty-one: veintiuno

22 twenty-two: veintidós

23 twenty-three: veintitrés

24 twenty-four: veinticuatro

25 twenty-five: veinticinco

26 twenty-six: veintiséis

27 twenty-seven: veintisiete

28 twenty-eight: veintiocho

29 twenty-nine: veintinueve

30 thirty: treinta

40: cuarenta

50: cincuenta

60: sesenta

70: sesenta

80: ochenta

90: noventa

100: cien