How to find out if a number is prime
Practice Questions
ISEE Upper Level Mathematics Achievement › How to find out if a number is prime
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1
Add all of the prime numbers between 20 and 40.
2
Which of the following numbers is prime?
3
Which of the following numbers is prime?
4
Find the sum of all the prime numbers between 
5
How many composite numbers are between and
inclusive?
6
How many composite numbers are between 61 and 80 inclusive?
7
Reduce the fraction:
8
Which of these numbers is prime?
9
How many prime numbers are there between 1 and 20?
10
How many composite numbers are between 
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