Tusen er mer enn hundre.

In Norwegian, tusen by itself is very commonly used for one thousand when you are talking about numbers in a general way.

So:

• Tusen er mer enn hundre. = A thousand is more than a hundred.

You can sometimes hear ett tusen, especially when someone is being extra precise, counting, or contrasting numbers, but in a simple statement like this, tusen sounds the most natural.

The same idea often applies to hundre as well:

• hundre = a hundred / one hundred

Er is the present tense of å være, which means to be.

So here:

• tusen er mer enn hundre literally means
• thousand is more than hundred

In natural English, we add articles:

• A thousand is more than a hundred.

So er works just like is / are / am depending on context, but the form er stays the same for all persons in the present tense:

• jeg er = I am
• du er = you are
• han er = he is

Mer enn means more than.

It is the standard way to compare amounts, degree, or size.

Examples:

• to er mer enn en = two is more than one
• Dette er mer enn nok. = This is more than enough.
• Hun jobber mer enn meg. = She works more than me.

In your sentence:

• mer enn hundre = more than a hundred

Norwegian often leaves out the equivalent of a in number expressions where English includes it.

So:

• hundre = hundred / a hundred / one hundred
• tusen = thousand / a thousand / one thousand

That is why:

• Tusen er mer enn hundre sounds complete and natural in Norwegian.

English usually prefers:

• A thousand is more than a hundred

But Norwegian does not need an article there.

No, this is very basic Norwegian sentence order.

The structure is:

• Tusen = subject
• er = verb
• mer enn hundre = complement

So it follows the normal pattern:

• Subject + verb + rest

This is similar to English:

• A thousand + is + more than a hundred

Nothing unusual is happening with word order in this sentence.

A rough guide for English speakers is:

• tusen ≈ TOO-sen
• er ≈ a short ehr or sometimes almost swallowed in fast speech
• mer ≈ mehr
• enn ≈ en
• hundre ≈ HOON-dreh or HUN-dreh, depending on accent

A very rough full pronunciation could be:

• TOO-sen ehr mehr en HUN-dreh

A few notes:

• The u in tusen is not exactly like English oo, but that is a useful approximation.
• The r in er and mer depends on dialect.
• Norwegian pronunciation varies a lot by region, so exact sound can differ.

Here, hundre is being used as a number word, not really as a countable noun in the usual English sense.

So in:

• Tusen er mer enn hundre it simply means hundred.

When Norwegian uses number words like this, they often do not behave exactly like ordinary nouns in English.

You can also use them in larger numbers:

• to hundre = two hundred
• tre hundre = three hundred
• fem tusen = five thousand

Notice that hundre and tusen often stay in the same form after another number.

This is a very common learner question.

• mer enn = more than
• flere enn = more than / more ... than, but used for countable plural things

Use mer for:

• quantities in a general sense
• uncountable things
• degree
• numbers as values

Use flere for:

• countable plural nouns

Examples:

• Tusen er mer enn hundre. = correct
  because you are comparing number values

• Jeg har flere bøker enn deg. = I have more books than you
  because books are countable

• Jeg har mer penger enn deg. = I have more money than you
  because money is treated as an amount

So in your sentence, mer enn is the correct choice.

Yes. The normal capitalization is exactly what you see:

• Tusen er mer enn hundre.

Only the first word is capitalized because it begins the sentence.

Unlike German, Norwegian does not capitalize ordinary nouns like tusen or hundre in the middle of a sentence.

So these are correct:

• Tusen er mer enn hundre.
• Jeg har hundre kroner.
• Hun vant tusen kroner.

It is perfectly grammatical and natural, but it sounds a bit like a simple teaching or explanatory sentence because it states an obvious numerical fact.

A native speaker would understand it immediately, and it does not sound wrong at all. It is just the kind of sentence you would expect in:

• a beginner textbook
• a math explanation
• a children’s learning context

So it is natural Norwegian, just very simple and instructional.

Yes, very often.

Examples:

• hundre = one hundred / a hundred
• to hundre = two hundred

• tre hundre og fem = three hundred and five

• tusen = one thousand / a thousand
• to tusen = two thousand
• fem tusen tre hundre = five thousand three hundred

So the words in your sentence are important building blocks for larger numbers.

Because enn is the word used after a comparison, like English than.

So:

• mer enn = more than
• mindre enn = less than
• større enn = bigger than

Examples:

• ti er mer enn fem = ten is more than five
• to er mindre enn tre = two is less than three

By contrast, også means also / too, so it would not fit here.

Yes, and it would be understandable, but mer enn is usually the better choice when comparing pure numerical value.

• mer enn = more than
• større enn = bigger than

For numbers, Norwegian commonly uses mer enn.
Using større enn is possible in some contexts, especially when talking about size or figurative scale, but for straightforward arithmetic comparison, mer enn is the most natural.

So:

• Tusen er mer enn hundre. = best choice for a simple number comparison