Numbers from 10 to 100

There are patterns that will help you memorize numbers.

11 to 15 all end in -ce:

11 once

12 doce

13 trece

14 catorce

15 quince

16 to 19 start with diez, ten

16 dieciséis - literally diez y seis, ten and six

17 diecisiete

18 dieciocho

19 diecinueve

20 to 30: the final -e of veinte, twenty, changes to -i

20 veinte

21 veintiuno

22 veintidós

23 veintitrés

24 veinticuatro

25 veinticinco

26 veintiséis

27 veintisiete

28 veintiocho

29 veintinueve

30 to 90: they all end in -nta.

30 treinta

40 cuarenta

50 cincuenta

60 sesenta

70 setenta

80 ochenta

90 noventa

31, 42, 53...etc. For the intervening numbers, you need y, and:

31 treinta y uno

42 cuarenta y dos

53 cincuenta y tres

...and so on.

100 - this is cien