Ég á fimmtíu krónur.

A rough English-friendly pronunciation is:

• Ég ≈ yeg
• á ≈ ow as in cow, but longer
• fimmtíu ≈ FIM-tee-u
• krónur ≈ KROH-nur

A more natural Icelandic pronunciation is harder than English spelling can show, but that approximation is good enough to start.

A few important points:

• é in Ég is not the same as plain e
• á is a long vowel
• r in Icelandic is usually rolled or tapped
• the first syllable is usually stressed: Ég, FIMM-, KRÓ-

Here á means have.

It is the 1st person singular form of the verb eiga, which often means to own, to possess, or simply to have.

So:

• ég á = I have
• þú átt = you have
• hann/hún/það á = he/she/it has

Be careful: á can also be a preposition in other sentences, meaning on or at, but in Ég á fimmtíu krónur, it is definitely a verb.

Yes, eiga often has the sense of own, but Icelandic uses it in many places where English simply says have.

So Ég á fimmtíu krónur is very normal Icelandic for I have fifty krónur.

It can sound a little more like I possess fifty krónur, but in everyday use it is completely natural and not unusually formal.

Because fimmtíu means fifty, so the noun has to be plural.

• króna = one króna
• krónur = krónas / kroner

So:

• ein króna = one króna
• fimmtíu krónur = fifty krónur

English often does not change some currency words very much in learners’ minds, but Icelandic does: the noun changes for number.

It is in the accusative plural, because it is the direct object of the verb á.

In this sentence:

• Ég = subject
• á = verb
• fimmtíu krónur = object

For the noun króna, the nominative plural and accusative plural are both krónur, so you do not see a different ending here. But grammatically, in this sentence, it is the accusative.

In this sentence, fimmtíu stays the same.

It means fifty, and unlike some lower numbers in Icelandic, it does not change here for gender in the way one, two, three, and four often do.

That is why you simply get:

• fimmtíu krónur
• fimmtíu bækur
• fimmtíu dagar

The number itself stays fimmtíu.

This is the basic Icelandic order:

• subject + verb + object

So:

• Ég = subject
• á = verb
• fimmtíu krónur = object

That is very similar to English I have fifty krónur.

Icelandic does have special word-order rules, especially the verb-second rule, so in other contexts you may see the verb move earlier in the sentence. But this simple sentence uses the most straightforward order.

Yes. That is also natural Icelandic.

• Ég á fimmtíu krónur = I have fifty krónur
• Ég er með fimmtíu krónur = literally I am with fifty krónur, but used to mean I have fifty krónur on me / with me

The difference is often:

• ég á can suggest possession in a general sense
• ég er með often suggests having something with you right now

In many everyday situations, both can work.

Because Icelandic, like English, usually does not use an article with amounts of money in this kind of sentence.

So you say:

• Ég á fimmtíu krónur

not something like I have the fifty krónur unless you mean some very specific fifty krónur already known from the context.

With amounts, the bare noun is normal.

You would say:

• Ég á eina krónu

Notice that both words change:

• ein becomes eina
• króna becomes krónu

That is because the noun phrase is the direct object, so it appears in the accusative.

A few useful comparisons:

• Ég á eina krónu = I have one króna
• Ég á tvær krónur = I have two krónur
• Ég á fimmtíu krónur = I have fifty krónur

This is one of the first places where Icelandic case and gender start to show up clearly.

Because é is a separate vowel in Icelandic, not just an e with decoration.

In Icelandic spelling, accents matter. They usually mark a different vowel sound, not just stress.

So:

• e and é are different
• a and á are different
• o and ó are different

That means you should learn Ég as the normal correct spelling of the word for I. The accent is not optional.

In an Icelandic context, króna / krónur usually refers to the Icelandic króna, the currency of Iceland.

So fimmtíu krónur would normally be understood as 50 Icelandic krónur.

If needed, Icelandic can be more specific, but in ordinary conversation krónur by itself usually means the local currency.

Grammatically yes, but in real life it is a very small amount today.

So the sentence is perfectly good for learning Icelandic, but as an everyday real-world statement it may sound like talking about pocket change.

That does not make the sentence wrong at all—it is just something learners sometimes wonder about.