A Quantitative Adjective is a word that indicates the quantities of nouns.

Examples:

1. A fistful of grain cannot feed thousands.
2. My family requires 5 kgs of sugar every month.
3. Some oil was spilled on the floor.
4. 100 gms of gold costs more than $ 27,000.
5. There was a lot of noise in the street.

In the above examples, A fistful, 5 kgs, Some, 100 gms, and a lot tell us the quantities of the nouns that follow them.

Generally, we talk about the quantities of material nouns. However, quantitative adjectives can also appear before abstract and common nouns.