Spanish Numbers: Learn to Count from 1 to 100

The numbers 1 through 20 in Spanish form the foundation of all counting. Numbers 1-15 are unique words you need to memorize individually. From 16-19, they follow a combined pattern based on 'diez' (ten).

Memorization Tips

Pay special attention to accent marks. They affect pronunciation and are required in correct spelling. Say each number aloud multiple times to reinforce pronunciation patterns.

Pronunciation Practice

Use the phonetic guides below as a starting point, but listen to native speakers whenever possible. Spanish pronunciation is consistent once you learn the basic sound rules.

Numbers 1-20 Reference

• uno (OO-noh): one
• dos (dohs): two
• tres (trehs): three
• cuatro (KWAH-troh): four
• cinco (SEEN-koh): five
• seis (says): six
• siete (see-EH-teh): seven
• ocho (OH-choh): eight
• nueve (NWEH-beh): nine
• diez (dee-EHS): ten
• once (OHN-seh): eleven
• doce (DOH-seh): twelve
• trece (TREH-seh): thirteen
• catorce (kah-TOHR-seh): fourteen
• quince (KEEN-seh): fifteen
• dieciseis (dee-eh-see-SAYS): sixteen
• diecisiete (dee-eh-see-see-EH-teh): seventeen
• dieciocho (dee-eh-see-OH-choh): eighteen
• diecinueve (dee-eh-see-NWEH-beh): nineteen
• veinte (BAYN-teh): twenty

Example Sentences

Uno: Quiero uno, por favor. (I want one, please.)

Dos: Tengo dos hermanos. (I have two brothers.)

Tres: Hay tres gatos en el jardin. (There are three cats in the garden.)

Cuatro: La mesa tiene cuatro sillas. (The table has four chairs.)

Cinco: Son las cinco de la tarde. (It's five in the afternoon.)

Seis: Necesito seis huevos. (I need six eggs.)

Siete: La semana tiene siete dias. (The week has seven days.)

Ocho: El edificio tiene ocho pisos. (The building has eight floors.)

Nueve: Faltan nueve minutos. (Nine minutes are left.)

Diez: Cuesta diez dolares. (It costs ten dollars.)

Once: El partido empieza a las once. (The game starts at eleven.)

Doce: Hay doce meses en un ano. (There are twelve months in a year.)

Trece: Mi hijo tiene trece anos. (My son is thirteen years old.)

Catorce: Llegamos el catorce de febrero. (We arrive on the fourteenth of February.)

Quince: La fiesta de quince anos es importante. (The fifteenth birthday party is important.)

Dieciseis: Tiene dieciseis estudiantes. (It has sixteen students.)

Diecisiete: Cumplo diecisiete manana. (I turn seventeen tomorrow.)

Dieciocho: A los dieciocho eres adulto. (At eighteen you are an adult.)

Diecinueve: Solo quedan diecinueve asientos. (Only nineteen seats remain.)

Veinte: Hay veinte personas en la sala. (There are twenty people in the room.)

From 21-29, Spanish merges numbers into single words using the 'veinti-' prefix. Starting at 30, the pattern changes completely. You say the tens digit, then 'y' (and), then the ones digit as separate words.

The Twenties Pattern

Numbers 21-29 follow the 'veinti-' prefix pattern: veintiuno, veintidos, veintitres. This pattern is unique to the twenties. Once you reach 30, the structure changes.

Tens and Compounds

The tens themselves (treinta, cuarenta, cincuenta, sesenta, setenta, ochenta, noventa) each have their own form. Once you know these tens and the digits 1-9, you can construct any number up to 99.

Numbers 21-100 Reference

• veintiuno (bayn-tee-OO-noh): twenty-one
• veintidos (bayn-tee-DOHS): twenty-two
• veintitres (bayn-tee-TREHS): twenty-three
• veinticuatro (bayn-tee-KWAH-troh): twenty-four
• veinticinco (bayn-tee-SEEN-koh): twenty-five
• veintiseis (bayn-tee-SAYS): twenty-six
• veintisiete (bayn-tee-see-EH-teh): twenty-seven
• veintiocho (bayn-tee-OH-choh): twenty-eight
• veintinueve (bayn-tee-NWEH-beh): twenty-nine
• treinta (TRAYN-tah): thirty
• treinta y uno (TRAYN-tah ee OO-noh): thirty-one
• cuarenta (kwah-REHN-tah): forty
• cincuenta (seen-KWEHN-tah): fifty
• sesenta (seh-SEHN-tah): sixty
• setenta (seh-TEHN-tah): seventy
• ochenta (oh-CHEHN-tah): eighty
• noventa (noh-BEHN-tah): ninety
• cien (see-EHN): one hundred

Example Sentences

Veintiuno: Tengo veintiun anos. (I am twenty-one years old.)

Veintidos: Son las veintidos horas. (It is twenty-two hundred hours.)

Veintitres: Hay veintitres capitulos. (There are twenty-three chapters.)

Veinticuatro: El dia tiene veinticuatro horas. (The day has twenty-four hours.)

Veinticinco: Cuesta veinticinco euros. (It costs twenty-five euros.)

Veintiseis: El alfabeto tiene veintiseis letras. (The alphabet has twenty-six letters.)

Veintisiete: Mi cumpleanos es el veintisiete. (My birthday is the twenty-seventh.)

Veintiocho: Febrero tiene veintiocho dias. (February has twenty-eight days.)

Veintinueve: Quedan veintinueve paginas. (Twenty-nine pages remain.)

Treinta: La clase dura treinta minutos. (The class lasts thirty minutes.)

Treinta y uno: Enero tiene treinta y un dias. (January has thirty-one days.)

Cuarenta: Mi padre tiene cuarenta anos. (My father is forty years old.)

Cincuenta: Cuesta cincuenta pesos. (It costs fifty pesos.)

Sesenta: Una hora tiene sesenta minutos. (An hour has sixty minutes.)

Setenta: Mi abuela tiene setenta anos. (My grandmother is seventy years old.)

Ochenta: El limite es ochenta kilometros. (The limit is eighty kilometers.)

Noventa: Hay noventa estudiantes. (There are ninety students.)

Cien: Cien por ciento seguro. (One hundred percent sure.)

Ordinal numbers indicate position or order: first, second, third, and so on. In Spanish, ordinal numbers must agree in gender and number with the noun they describe. This means they change form depending on whether the noun is masculine or feminine, singular or plural.

Gender and Number Agreement

'Primero' and 'tercero' drop the final '-o' before masculine singular nouns. For example, say 'primer piso' (first floor), not 'primero piso.' Similarly, use 'tercer capitulo' (third chapter), not 'tercero capitulo.' This applies only to these two ordinals before masculine singular nouns.

Ordinals Above Tenth

Ordinals above tenth are rarely used in everyday speech. Spanish speakers typically switch to cardinal numbers instead. Say 'piso doce' (floor twelve) rather than 'duodecimo piso' (twelfth floor). This makes conversation simpler and more natural.

Ordinal Numbers 1-10 Reference

• primero/primera (pree-MEH-roh/rah): first
• segundo/segunda (seh-GOON-doh/dah): second
• tercero/tercera (tehr-SEH-roh/rah): third
• cuarto/cuarta (KWAHR-toh/tah): fourth
• quinto/quinta (KEEN-toh/tah): fifth
• sexto/sexta (SEHKS-toh/tah): sixth
• septimo/septima (SEHP-tee-moh/mah): seventh
• octavo/octava (ohk-TAH-boh/bah): eighth
• noveno/novena (noh-BEH-noh/nah): ninth
• decimo/decima (DEH-see-moh/mah): tenth

Example Sentences

Primero: Es mi primer dia de clase. (It's my first day of class.)

Segundo: Vivo en el segundo piso. (I live on the second floor.)

Tercero: Es la tercera vez que llamo. (It's the third time I'm calling.)

Cuarto: Estamos en el cuarto mes del ano. (We are in the fourth month of the year.)

Quinto: La quinta avenida es famosa. (Fifth Avenue is famous.)

Sexto: Estoy en el sexto grado. (I am in the sixth grade.)

Septimo: Es el septimo libro de la serie. (It's the seventh book of the series.)

Octavo: Ganaron por octava vez. (They won for the eighth time.)

Noveno: Vive en la novena calle. (He lives on Ninth Street.)

Decimo: Es su decimo aniversario. (It is their tenth anniversary.)

Mastering Spanish requires the right study approach, not just more hours. Research in cognitive science shows that three techniques produce the best learning outcomes: active recall, spaced repetition, and interleaving.

Three Evidence-Based Study Techniques

Active recall means testing yourself rather than re-reading. Spaced repetition involves reviewing at scientifically-optimized intervals. Interleaving means mixing related topics rather than studying one in isolation. FluentFlash is built around all three of these methods.

When you study Spanish numbers with our FSRS algorithm, every term is scheduled for review at exactly the moment you're about to forget it. This maximizes retention while minimizing study time.

Why Passive Review Fails

The most common mistake students make is relying on passive review methods. Re-reading your notes, highlighting textbook passages, or watching lecture videos feels productive, but studies show these methods produce only 10-20% of the retention that active recall achieves.

Flashcards force your brain to retrieve information, which strengthens memory pathways far more than recognition alone. Pair this with spaced repetition scheduling, and you can learn in 20 minutes a day what would take hours of passive review.

Practical Study Plan

Start by creating 15-25 flashcards covering the highest-priority concepts. Review them daily for the first week using our FSRS scheduling. As cards become easier, intervals automatically expand from minutes to days to weeks. You're always working on material at the edge of your knowledge.

After 2-3 weeks of consistent practice, Spanish concepts become automatic rather than effortful to recall. Consistent daily practice, even just 10-15 minutes, is more effective than long, infrequent study sessions.

Study Steps to Follow

1. Generate flashcards using FluentFlash AI or create them manually from your notes
2. Study 15-20 new cards per day, plus scheduled reviews
3. Use multiple study modes (flip, multiple choice, written) to strengthen recall
4. Track your progress and identify weak topics for focused review
5. Review consistently. Daily practice beats marathon sessions