Three numbers between 80 and 100 are prime numbers. what numbers are they? eight numbers between 31 and 41 are composite numbers what are they? write all the prime numbers that are odd between 30 to 50. write all the prime numbers that are even from 30 to 50. write all the composite numbers that are odd between 30 to 50. write all the composite numbers that are even between 30 to 50. describe two different ways to find 2×50×25 using mental math.