These are adjectives which tell how many or how much. They give the number or the quantity, either specific or approximate, of the noun in question. They are also referred to as numerals
Examples: Three elephants were killed by the game rangers.
He bought several houses in Kileleshwa.
Don’t put much sugar in the tea!
More examples of numerals
Adjectives that are in form of numbers are used with countable nouns:
Examples: Two calves were born yesterday.
Five chimpanzees performed funny tricks.
Many children like dinosaurs.
A definite or indefinite adjective may look like a pronoun, but it is used differently in a sentence.
It is an adjective used to modify a noun.
Adjectives that are in farm of quantity are used with uncountable nouns.
Examples: Do you have any water in the house?
How much flour did you buy?