This article covers the list of Spanish numbers, from 1 to 29, their use and grammar explanations, a video to listen how their are pronounced and get familiar with their spelling and, finally, some exercises, to practice what you have learn.

First of all, here is the table with the list of numbers in Spanish:

Number	English	Spanish	Number	English	Spanish
1	One	Un / Uno / Una	16	Sixteen	Dieciséis
2	Two	Dos	17	Seventeen	Diecisiete
3	Three	Tres	18	Eighteen	Dieciocho
4	Four	Cuatro	19	Nineteen	Diecinueve
5	Five	Cinco	20	Twelve	Veinte
6	Six	Seis	21	Twenty one	Veintiuno / Veintiuna
7	Seven	Siete	22	Twenty two	Veintidós
8	Eight	Ocho	23	Twenty three	Veintitrés
9	Nine	Nueve	24	Twenty four	Veinticuatro
10	Ten	Diez	25	Twenty five	Veinticinco
11	Eleven	Once	26	Twenty six	Veintiséis
12	Twelve	Doce	27	Twenty seven	Veintisiete
13	Thirteen	Trece	28	Twenty eight	Veintiocho
14	Fourteen	Catorce	29	Twenty nine	Veintinueve
15	Fifteen	Quince

Notes:
The Spanish word "Número" means "Number". Its abbreviation (No.) is "Nº"Número 1:
We use either "un" or "uno", both are correct.

"Un" is used when followed by a noun (substantive). For example: "Necesito un bolígrafo" ("I need a pen"), where "bolígrafo" is the noun or substantive.

"Uno" is used when no noun is following it. For example: "Necesito uno" ("I need one")

"Una" is used with feminine nouns. For example: "Una bonita boda" ("A nice wedding").

The rest of numbers in this list have the same form for masculine and feminine, except "veintiuno" (masculine) and veintiuna" (feminine).

Examples: "Veintiún libros" ("Twenty one books") (masculine) - "Veintiuna historias" ("Twenty one stories") (feminine).Numbers from 12 to 15 end in -ce.Numbers from 16 to 19 follow this structure: "10 and something". That is, for example: 16 = diez y seis. When forming one word, the preposition "y" becomes "i" = dieciséis. Note there are two more changes: First, the final "-z" in diez becomes "c" and second, "-séis" takes the accent on letter "e".Numbers from 21 to 29 are also following the same structure: "veinte and something": veinte y uno --> veintiuno.Finally, accents. Note numbers "dos", "tres" and "seis" don't have an accent. But when forming numbers 16, 22, 23 and 26, they take the accent.
I have created a new video, so that you can listen to the pronunciation of these numbers and associate the Spanish pronunciation with their spelling. Watch the video.

Do you want to make some exercises? If so, here is the link to a quiz I have prepared about Spanish numbers, from number 1 to 29. Go to the quiz.