Partitive After Numbers: kolme taloa | Finnish Grammar

Here is a rule that trips up every English speaker on day one, because it runs exactly opposite to English instinct: in Finnish, a counted noun after any number greater than one appears in the partitive singular. Not the plural — the singular. Kaksi kissaa is, literally, "two cat-of." English says "two cats" (plural); Finnish says "two of cat." Once you accept this one signature rule, counting in Finnish becomes mechanical.

One is special; everything above it is partitive

The number yksi ("one") is the odd one out. It takes the plain nominative, just like English:

Pöydällä on yksi kissa.

There's one cat on the table.

From two upward, the noun switches to the partitive singular and stays there — for kaksi, kolme, sata, tuhat, and everything in between:

Pöydällä on kaksi kissaa.

There are two cats on the table.

Pihalla kasvaa kolme isoa puuta.

Three big trees grow in the yard.

Ostin viisi omenaa ja kaksi banaania.

I bought five apples and two bananas.

The contrast is the thing to burn in: yksi kissa (nominative) vs kaksi kissaa (partitive). Say it out loud until the switch after yksi feels automatic.

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The English plural is a false friend here. "Two cats" is plural in English, so learners write *kaksi kissat. But Finnish counts differently: the number already carries the plurality, so the noun goes into the partitive singular. One idea, one drill: kaksi kissaa, never *kaksi kissat.

The noun stays singular — even after sata and tuhat

This is where competitors' explanations go fuzzy: no matter how large the number, the noun does not become plural. A hundred euros is sata euroa (partitive singular), never sata euroja (plural). A thousand years is tuhat vuotta, not tuhat vuosia.

Number + noun	Meaning	Form of noun
yksi euro	one euro	nominative singular
kaksi euroa	two euros	partitive singular
kymmenen euroa	ten euros	partitive singular
sata euroa	a hundred euros	partitive singular
tuhat euroa	a thousand euros	partitive singular

Lippu maksaa kaksikymmentä euroa.

The ticket costs twenty euros.

Talo on seissyt tässä sata vuotta.

The house has stood here for a hundred years.

Olen käynyt Lapissa monta kertaa.

I've been to Lapland many times.

Notice monta kertaa ("many times"): monta is itself the partitive of moni, and it behaves exactly like a number — the counted noun stays partitive singular (kertaa, not kertoja).

Mind the vowel harmony on the ending

The counted noun takes an ordinary partitive ending, so vowel harmony still applies. Back-vowel nouns keep a back ending, front-vowel nouns a front ending:

Söin kaksi omenaa ja join kolme lasillista vettä.

I ate two apples and drank three glasses of water.

Here omenaa (back) and vettä (front) sit in the same sentence with opposite ending vowels — each obeys its own stem, never the number's.

When the whole phrase declines, both parts move

So far the number phrase has been a subject or a plain object. But when the entire "number + noun" phrase goes into some other case — because a postposition, a location, or a verb demands it — then both the number and the noun take that case. The partitive rule applies only when the phrase is a subject or the object; elsewhere, agreement takes over.

Base (partitive)	In another case	Meaning
kaksi taloa	kahdessa talossa	in two houses (inessive)
kolme lasta	kolmelle lapselle	to three children (allative)
viisi minuuttia	viidessä minuutissa	in five minutes (inessive)

Asumme kahdessa talossa saman pihan ympärillä.

We live in two houses around the same yard.

Ostin lahjat kolmelle lapselle.

I bought presents for three children.

Look at kahdessa talossa: the number kaksi itself declines to kahde- + inessive -ssa, and talo takes the inessive -ssa too. Neither is partitive here — the case they share is whatever the sentence assigns. The partitive singular is specifically the counting form; it is not glued to numbers forever. (How numbers themselves decline — kaksi → kahden → kahdessa — is on the declining numbers page.)

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Two stages: (1) counting a subject or object → number + partitive singular noun (kolme taloa). (2) the whole phrase in some other case → number and noun agree in that case (kolmessa talossa). Stage 2 is not partitive at all.

Common Mistakes

❌ Ostin kaksi omenat.

Incorrect — the English plural is a trap; after a number the noun is partitive singular: kaksi omenaa.

✅ Ostin kaksi omenaa.

I bought two apples.

❌ Se maksaa sata euroja.

Incorrect — the noun stays singular even after sata: sata euroa, not the plural euroja.

✅ Se maksaa sata euroa.

It costs a hundred euros.

❌ Pöydällä on kaksi kissa.

Incorrect — above one, the noun must be partitive: kaksi kissaa.

✅ Pöydällä on kaksi kissaa.

There are two cats on the table.

❌ Asun kaksi talossa.

Incorrect — when the phrase takes another case, the number declines too: kahdessa talossa.

✅ Asun kahdessa talossa vuorotellen.

I live in two houses in turn.

❌ Olen käynyt siellä monta kertoja.

Incorrect — monta counts like a number, so the noun is partitive singular: monta kertaa.

✅ Olen käynyt siellä monta kertaa.

I've been there many times.

Key Takeaways

yksi takes the nominative (yksi kissa); every number above it takes the partitive singular (kaksi kissaa, kolme taloa, sata euroa).
The counted noun stays singular no matter how big the number — sata euroa, never sata euroja.
monta behaves like a number: monta kertaa (partitive singular).
Vowel harmony still governs the ending: omenaa (back), vettä (front).
When the whole phrase takes another case, the number and noun agree in it (kahdessa talossa, kolmelle lapselle) — that is no longer the partitive.

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