Factors and multiples

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number without leaving a remainder.

Front

What is a multiple?

Back

A multiple of a number is the product of that number and any whole number.

Front

What is the highest common factor (HCF)?

Back

The HCF of two or more numbers is the largest number that divides all of them without leaving a remainder.

Front

What is the lowest common multiple (LCM)?

Back

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

Front

List the factors of 12.

Back

1, 2, 3, 4, 6, 12

Front

List the multiples of 5 up to 50.

Back

5, 10, 15, 20, 25, 30, 35, 40, 45, 50

Front

How do you find the HCF of 18 and 24?

Back

List the factors: 18 (1, 2, 3, 6, 9, 18) and 24 (1, 2, 3, 4, 6, 8, 12, 24). The HCF is 6.

Front

How do you find the LCM of 4 and 5?

Back

List the multiples: 4 (4, 8, 12, 16, 20, ...) and 5 (5, 10, 15, 20, ...). The LCM is 20.

Front

What is the relationship between factors and multiples?

Back

Factors are numbers that divide another number evenly, while multiples are the result of multiplying a number by an integer.

Front

What is the HCF of 15 and 25?

Back

The HCF is 5.