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
Now, the next numbers from 13 to 19. You have to add "teen" at the end of the word:
13. thirteen – trece
14. fourteen – catorce
15. fifteen – quince
16. sixteen – dieciséis
17. seventeen – diecisiete
18. eighteen – dieciocho
19. nineteen – diecinueve
The next numbers are 20, 30, 40... 90. You have to add "ty" at the end of the word:
20. twenty – veinte
30. thirty – treinta
40. fourty – cuarenta
50. fifty – cincuenta
60. sixty – sesenta
70. seventy – setenta
80. eighty – ochenta
90. ninety – noventa
This is very easy, isn’t it? Now, when you write 22, you just have to add "twenty" and then "two":
21. twenty one – veintiuno
34. thirty four – treinta y cuatro
48. forty eight – cuarenta y ocho
53. fifty three – cincuenta y tres
67. sixty seven – sesenta siete
79. seventy nine – setenta y nueve
82. eighty two – ochenta y dos
95. ninety five – noventa y cinco
The last numbers are easy to write just check the examples:
100. one hundred - cien
200. two hundred - doscientos
1000. one thousand - mil
3000. three thousand - tres mil
10000. ten thousand -diez mil
100,000. one houndred thousand - cien mil
1,000,000. one million - un millón