Introduction
Learning how to use numbers with nouns is one of the most practical skills for beginners in Brazilian Portuguese. This guide explains counting, gender and plural agreement, common structures, and useful examples for everyday situations like shopping, ordering food, giving your phone number, and reading signs.
Basic rule: number + noun order and agreement
In Brazilian Portuguese, the usual order is number followed by the noun, similar to English. However, numbers affect noun plurality and sometimes articles and adjectives. Start with the simplest cases and then add the small exceptions.
Singular and plural with numbers
When using a number greater than one, the noun must be plural. For one, the noun is singular. For zero, use the plural form. Examples:
um livro — one book
dois livros — two books
zero livros — zero books
Using one: um vs uma
Choose um for masculine nouns and uma for feminine nouns, because these are indefinite articles used as the number one. Examples:
um carro — one car (carro is masculine)
uma cadeira — one chair (cadeira is feminine)
Basic numbers you should know
Memorize these simple cardinal numbers to get started. Use them with nouns in daily situations.
0 zero
1 um / uma
2 dois / duas
3 três
4 quatro
5 cinco
6 seis
7 sete
8 oito
9 nove
10 dez
Gender for numbers greater than one
Only dois, três, and other numbers change for gender when they use the forms dois/duas, três stays the same in writing but agreement is shown by the noun. Use dois for masculine plural nouns and duas for feminine plural nouns. Examples:
dois amigos — two friends (male or mixed group)
duas amigas — two female friends
Numbers plus articles and adjectives
If you include an article before a number, the article must agree with the noun. Most beginners avoid articles for simple counts, but you will see both forms. Examples:
os dois livros — the two books (os is masculine plural)
as três cadeiras — the three chairs (as is feminine plural)
Adjectives after the noun
Adjectives follow the noun in Portuguese and must agree in gender and number. When a number modifies a noun and an adjective is present, both noun and adjective are plural for numbers greater than one. Examples:
dois carros novos — two new cars
duas casas grandes — two big houses
Zero, fractions, and decimals
Beginners often meet zero and fractional numbers on menus, price tags, or signs. For zero, use the plural noun as in English. For fractions, gender agreement can appear in words like meio and metade.
Zero with nouns
zero pessoas — zero people
zero mesas — zero tables
Fractions and halves
Use meio or metade for halves. Metade is a noun and does not change with gender because it stands alone; meio can be an adjective and must agree.
meia hora — half an hour (hora is feminine, so meia)
metade do bolo — half of the cake
Decimals and cents
Decimals often appear as price values. In Portuguese speech, decimals are read with the decimal separator as vírgula in writing, but in spoken everyday contexts you can say reais and centavos clearly. Example prices:
R$ 12,50 — doze reais e cinquenta centavos
R$ 1,99 — um real e noventa e nove centavos
Counting items in common situations
Below are practical phrases and examples a beginner will use in shops, restaurants, transport, and classrooms.
Shopping and markets
Quantos quilos? — How many kilos?
Example answers:
Dois quilos de maçã, por favor
two kilos of apples, please
Um quilo
one kilo
Ordering food and drinks
Use numbers with food items and containers. Note agreement for feminine and masculine nouns.
Quero dois sanduíches e uma água
I want two sandwiches and one water
Um café e três pães, por favor
one coffee and three breads, please
Transport and timetables
When giving or asking times, use numbers differently. Hours use singular definite article in daily expressions, but beginners can stick to simple numeric expressions.
O ônibus chega às oito
the bus arrives at eight
Tenho duas horas
I have two hours
Phone numbers and addresses
When giving phone numbers, Brazilians often say single digits or pairs. For beginners, practice reading digits clearly:
Meu número é nove, oito, sete, seis, cinco, quatro, três, dois, um
my number is 9 8 7 6 5 4 3 2 1
Rua das Flores, número vinte e cinco
Street of Flowers, number 25
Common beginner mistakes and how to avoid them
Here are errors learners make and simple tips to fix them.
Forgetting plural after numbers > 1
Wrong: dois livro — instead say dois livros. Always pluralize the noun when the number is greater than one.
Mismatching gender for one
Wrong: um cadeira — use uma cadeira. Remember um with masculine, uma with feminine.
Using singular adjectives with plural nouns
Wrong: dois carro novo — correct is dois carros novos. Adjectives must match noun plurality and gender.
Confusing dois and duas
Wrong: duas amigos — use dois amigos for a mixed or male group; duas amigas for an all-female group.
Practical tips for fast learning
Short, specific habits help beginners internalize number + noun agreement.
Tip 1: Learn noun gender with the noun. Memorize as o carro, a casa, then pair numbers accordingly.
Tip 2: Practice short sentences aloud: dois cafés, uma garrafa, três livros.
Tip 3: Label real objects at home with number phrases: dois copos on a shelf with two cups.
Tip 4: Use common contexts like shopping lists and menus to practice realistic phrases.
Mini practice exercises
Translate these into Brazilian Portuguese. Check your answers against the guide above.
1. two apples
2. one table
3. three friends (female)
4. zero chairs
5. half an hour
Answers:
1. duas maçãs
2. uma mesa
3. três amigas
4. zero cadeiras
5. meia hora
Conclusion
Getting numbers right with nouns in Brazilian Portuguese is a matter of learning gender and plural patterns, and practicing simple phrases in everyday contexts like shopping, transportation, and food ordering. Focus on um/uma, dois/duas, plural nouns after numbers greater than one, and adjective agreement. With targeted practice using the examples above, you will be comfortable counting and describing quantities in minutes, not months.
