This presentation will look at an older, more computational method, of calculating square roots. Students will have to recall the fact that prime numbers are numbers with only two factors - 1 and itself. Using these prime numbers, students will determine the prime factors of a larger square number. Prepare for some work. Example the prime factors of 100 would be --> 2*50; 2*2*25; 2*2*5*5 --> (2*5) x (2*5) --> Square root of 100 is 10.