Usage patterns
残り〈数〉the amount/time remaining
The test ends in 5 more minutes.
残りの〈物〉the remaining ~; the rest of the ~
I'll do the rest of the work tomorrow.
〈物〉の残りthe leftover part of ~
I drank the rest of the soup.
残りを〈動詞〉to do something with what's left
I tidied up the rest before going home.
Expressions
残りわずかonly a few left; little remaining