Cien es más que diez.

Use cien when 100 stands alone or comes directly before a noun.

• Cien es más que diez. = 100 is more than 10.
• cien libros = 100 books

Use ciento when 100 is part of a longer number:

• ciento uno = 101
• ciento diez = 110
• ciento veinticinco = 125

So in this sentence, 100 is standing by itself, so cien is correct.

Más que is the normal way to say more than when comparing things.

• Cien es más que diez. = 100 is more than 10.
• Ana tiene más libros que Luis. = Ana has more books than Luis.

A very useful pattern is:

A es más que B
= A is more than B

Here:

• cien = 100
• es = is
• más que = more than
• diez = 10

The accent mark matters because más and mas are different words.

• más = more
• mas = but (very literary or old-fashioned)

So in this sentence, the accent is necessary because the word means more.

In a full sentence like this, es is needed because it is the verb to be.

• Cien es más que diez. = correct
• Cien más que diez. = incomplete or unnatural as a normal sentence

Spanish often drops subject pronouns like yo or él, but it does not usually drop the main verb. So es must stay here.

Yes, but the original order is the most straightforward.

These are all natural:

• Cien es más que diez.
• Diez es menos que cien.
• Más que diez es cien. — grammatically possible, but not the normal way to say it

For a learner, Cien es más que diez is the clearest and most standard version.

In most of Latin America, cien sounds roughly like see-en, but said as one syllable: syen.

A simple approximation for English speakers:

• cien ≈ syen
• es ≈ ess
• más ≈ mahs
• que ≈ keh
• diez ≈ dyes

So the whole sentence sounds roughly like:

syen ess mahs keh dyes

Note:

• In most of Spain, cien begins with a th sound, but in Latin America it usually begins with an s sound.

Because the numbers are being used directly as numbers, not as nouns with an article.

Spanish does not normally say:

• El cien es más que el diez. for this kind of basic number comparison

Instead, it simply says:

• Cien es más que diez.

You may see articles with numbers in other contexts, but not usually in simple statements like this one.

By themselves, numbers do not usually change for gender in this kind of sentence.

So:

• cien
• diez

stay the same.

However, some numbers do change in certain contexts, especially uno:

• un libro
• una casa

And ciento can appear in forms like:

• doscientos libros
• doscientas páginas

But in Cien es más que diez, there is no gender change to worry about.

The sentence is written the same way in Latin America and Spain:

Cien es más que diez.

The main difference is pronunciation:

• In most of Latin America, cien sounds like it starts with s
• In most of Spain, cien sounds like it starts with th

But the grammar and wording are the same.

This is a very common question.

Use más que for comparisons:

• Cien es más que diez.
• Ella es más alta que yo.

Use más de mainly with numbers, quantities, or expressions like more than three, more than a year, etc.:

• más de diez personas = more than ten people
• más de un año = more than a year

So:

• Cien es más que diez. compares 100 and 10
• Hay más de diez personas. means the quantity is above ten

Yes. In this sentence, the numbers are functioning like noun ideas: 100 and 10 as concepts.

English does the same thing:

• One hundred is more than ten.

Spanish allows numbers to be the subject of a sentence in the same way:

• Cien is the subject
• es is the verb
• más que diez is the rest of the statement

So even though cien is a number, it can still behave like the subject of a sentence.