Incorrect spelling, explanation: you can’t spell this word as hundered because the proper version doesn’t contain the additional -e vowel. Just look at the etymology – hundred comes from Middle English hundred and from Old English hundred. It means that this word’s construction hasn’t changed over the years.

Correct spelling, explanation: the word hundred is a numerical term representing the quantity or number 100. It is a cardinal number that falls between 99 and 101 in the numerical sequence. Hundred is used to denote a specific count or quantity of items or to describe a numerical value. You can’t spell it as hundered because that would be a mistake.

Definition of hundred:
numeral, a number equal to 10 times 10
The bakery prepared a batch of delicious cupcakes, and within an hour, they had sold over a hundred of them.
The historical novel vividly depicted the turbulent events of the fifteenth century, spanning several hundred pages of captivating storytelling.

Collocations with hundred:
Some most commonly used collocations include:
1 A hundred-dollar bill: a denomination of currency.
He handed over a hundred-dollar bill to pay for the purchase.
2. One in a hundred: signifying rarity or exceptionalism.
His talent in art is one in a hundred; he is truly gifted.
3. A hundred-mile journey: measuring distance.
The cyclists embarked on a grueling hundred-mile journey through challenging terrain.
4. Hundredth anniversary: commemorating a milestone after a hundred years.
The company celebrated its hundredth anniversary with a grand event.