KS2 Primary Maths Age 9-13 - Number and Place Value: Prime Numbers - Explained

The video tutorial explains how to identify prime numbers, using 89, 95, and 87 as examples. It highlights that 89 is prime because it has only two factors: one and itself. The video further explains that 95 is not prime as it ends in 5, making it divisible by 5, and 87 is not prime because it is divisible by 3. The tutorial emphasizes the importance of understanding why numbers are not prime to gain full marks in exams.

Why is it important to explain why other numbers are not prime?

What are the two factors of a prime number?