Potrzebuję tysiąca złotych.

Potrzebuję means I need.

Its dictionary form is potrzebować = to need.

So:

• potrzebować = to need
• potrzebuję = I need

This is the 1st person singular present-tense form.

Conjugation example:

• potrzebuję = I need
• potrzebujesz = you need
• potrzebuje = he/she/it needs

In Polish, the subject pronoun is often omitted because the verb ending already shows who is doing the action.

Here, potrzebuję ends in -ę, which tells you it means I need.

So:

• Potrzebuję tysiąca złotych. = I need a thousand zlotys.
• Ja potrzebuję tysiąca złotych. = also correct, but ja adds emphasis, like I need a thousand zlotys.

Polish usually leaves out ja unless you want contrast or emphasis.

Because potrzebować normally takes the genitive case.

The basic form is:

• tysiąc = a thousand

But after potrzebuję, it changes to the genitive:

• potrzebuję tysiąca = I need a thousand

So the pattern is:

• Mam tysiąc złotych. = I have a thousand zlotys.
• Potrzebuję tysiąca złotych. = I need a thousand zlotys.

This is one of the most important things to remember about potrzebować: with a noun phrase, standard Polish usually uses the genitive.

Because złotych is the form used here after tysiąc, and also because the whole phrase is in a genitive structure.

Useful money forms:

• 1 złoty
• 2, 3, 4 złote
• 5+ złotych

And with tysiąc, you normally get:

• tysiąc złotych = a thousand zlotys

After potrzebuję, the first word changes:

• potrzebuję tysiąca złotych

So:

• tysiąca = genitive of tysiąc
• złotych = the form used with numbers like this

For a learner, the safest chunk to remember is simply:

• tysiąc złotych
• potrzebuję tysiąca złotych

Yes. Tysiąc can mean both a thousand and one thousand, depending on context.

So:

• tysiąc złotych = a thousand zlotys / one thousand zlotys

You do not need to add a separate word for one.

You can say jeden tysiąc, but it is usually less natural unless you are being especially precise, formal, or contrasting it with another number.

A rough English-friendly guide:

potrzebuję → po-tsheh-BU-yeh
tysiąca → ti-SYON-tsa
złotych → ZWO-tikh

A few pronunciation notes:

• rz here sounds like the s in measure / zh
• ę at the end of potrzebuję is often pronounced a bit like -eh or -yeh in normal speech
• ą in tysiąca sounds roughly like on before c
• zł at the start of złotych can feel tricky; zł is roughly like zw for many English speakers as a first approximation

No, Polish word order is more flexible than English, because case endings show the grammatical relationships.

The neutral, most natural order here is:

• Potrzebuję tysiąca złotych.

But you could also hear:

• Tysiąca złotych potrzebuję.

That version sounds more marked or emphatic, as if highlighting the amount.

For learners, it is best to stick with:

• Potrzebuję tysiąca złotych.

In standard Polish, yes: with a noun, potrzebować normally takes the genitive.

Examples:

• Potrzebuję czasu. = I need time.
• Potrzebujesz pomocy. = You need help.
• Potrzebujemy pieniędzy. = We need money.

You may sometimes hear non-standard or colloquial usage with another case, but as a learner, you should treat genitive after potrzebować as the correct rule.

Yes. In everyday writing, especially in practical situations, numbers and the currency abbreviation are very common:

• Potrzebuję 1000 zł.

This is completely natural.

But if you write the whole amount out in words, then:

• Potrzebuję tysiąca złotych.

Both are fine. The version with digits is just more practical and common in many real-life contexts.

This is very useful to memorize:

• 1 złoty
• 2 złote
• 3 złote
• 4 złote
• 5 złotych
• 10 złotych
• 100 złotych
• 1000 złotych

So even outside this sentence, you will often see:

• mam dwa złote = I have two zlotys
• mam pięć złotych = I have five zlotys
• mam tysiąc złotych = I have a thousand zlotys

Then with potrzebuję, the amount phrase changes as needed:

• potrzebuję jednego złotego
• potrzebuję dwóch złotych
• potrzebuję pięciu złotych
• potrzebuję tysiąca złotych

Yes. Złoty is the name of the Polish currency, and in this sentence złotych clearly means zlotys.

Even though the word historically relates to golden, in modern everyday Polish it is simply the currency name.

So:

• złoty / złote / złotych = Polish zloty / zlotys

You may also see the abbreviation:

• zł

For example:

• 1000 zł = 1000 zlotys

It is neutral and perfectly natural.

• It works in everyday speech.
• It also works in writing.
• It is not especially formal or especially casual.

Depending on tone and context, it could mean anything from a simple statement to a request for money, but grammatically it is just a normal neutral sentence.