hundred
the number 100 /ˈhʌn.drəd/
thousand
the number 1,000 /ˈθaʊ.zənd/
quarter
one of four equal parts (1/4) /ˈkwɔː.tər/
half
one of two equal parts (1/2) /hɑːf/
Examples
"There are a hundred students."
"The city has ten thousand people."
"It is quarter past three."
"It is half past six."