✕

TheSchoolRun.com closure date

As we informed you a few months ago, TheSchoolRun has had to make the difficult decision to close due to financial pressures and the company has now ceased trading. We had hoped to keep our content available through a partnership with another educational provider, but this provider has since withdrawn from the agreement.

As a result, we now have to permanently close TheSchoolRun.com. However, to give subscribers time to download any content they’d like to keep, we will keep the website open until 31st July 2025. After this date, the site will be taken down and there will be no further access to any resources. We strongly encourage you to download and save any resources you think you may want to use in the future.

In particular, we suggest downloading:

You should already have received 16 primary school eBooks (worth £108.84) to download and keep. If you haven’t received these, please contact us at [email protected] before 31st July 2025, and we will send them to you.

We are very sorry that there is no way to continue offering access to resources and sincerely apologise for the inconvenience caused.

What is long multiplication?

What is long multiplication?
We explain what the long multiplication method is and review how multiplication skills are built up through each year of primary school.

What is long multiplication?

Long multiplication (or column multiplication) is a written method of multiplying numbers (usually a two- or three-digit number by another large number).

It is usually used in Year 5 and Year 6 once children have got the hang of using the grid method. The benefit of the grid method is that it encourages children to think about place value and multiply multiples of ten and one hundred. Once they have got the hang of this, long multiplication is a faster, more efficient technique to use.

How to multiply using the long multiplication method

As in column addition and column subtraction, the numbers are positioned in a column as follows:

Multiplication in primary school

Children's multiplication skills are built up through their time at primary school as follows.

Year 1

  • Count on or back in ones, twos, fives and tens.
  • Solve one-step problems involving multiplication using objects and arrays with the support of the teacher.

Here is an example of an array to demonstrate 5 x 3 or 3 x 5:

Year 2

  • Recall multiplication facts for the 2, 5 and 10 times tables and related division facts.
  • Use repeated addition (representing 4 lots of 3 as 3 + 3 + 3 + 3) and arrays to work out multiplication questions.
  • Recognise multiples of 2, 5 and 10.
  • Use the x and = signs when writing multiplication number sentences.
  • Solve problems involving multiplication using objects and arrays (see diagram above).

Year 3

  • Recall multiplication facts for the 2, 3, 4, 5, 8 and 10 times tables and the corresponding division facts.
  • Use written methods to multiply two-digit numbers by one-digit numbers (for example: 13 x 4).

Year 4

  • Recall multiplication facts up to 12 x 12 and corresponding division facts.
  • Recognise and use factor pairs.
  • Multiply two-digit and three-digit numbers by a one-digit number using a formal written layout.

Year 5

  • Identify multiples and factors.
  • Recognise prime numbers have only two factors and identify prime numbers less than 100.
  • Understand square and cubed numbers.
  • Multiply numbers up to four digits by a one-digit or two-digit number using formal methods, including long multiplication.

As you can see from the above objectives, children do not need to multiply two-digit numbers by three-digit numbers until Year 6, so the long multiplication method would probably not be taught until then (although able Year 5 children may use it as well).

Year 6

  • Multiply numbers up to four digits by a two-digit number using long multiplication.
  • Identify common factors, common multiples and prime numbers.
  • Multiply one-digit numbers with up to two decimal places by whole numbers.