A factor is a number that divides exactly into another number with no remainder

The HCF is the largest number that divides exactly into two or more numbers

A multiple is the result of multiplying a number by any whole number

Which of these is a multiple of both 4 and 6?

The LCM is the smallest number that is a multiple of two or more numbers

What is the Lowest Common Multiple (LCM)?

A prime number has exactly two factors: 1 and itself

List all prime numbers between 20 and 30.

A square number is the result of multiplying a whole number by itself

A cube number is the result of multiplying a number by itself, then by itself again

Add the digits. If the sum is divisible by 3, the number is divisible by 3.

How do you know if a number is divisible by 3?

Look at the last 2 digits. If they form a number divisible by 4, the whole number is.

How do you know if a number is divisible by 4?

Which number is divisible by both 3 and 4 (i.e., by 12)?

Adding two odd numbers always gives an even result

What happens when you add two odd numbers?

What happens when you multiply an odd number by an even number?

Master factors, multiples, prime numbers, squares, cubes, and divisibility rules