Calculate using mental and written methods

There are many occasions where we need to be able to perform calculations without using a calculator or computer.  Many of the mental and written methods will have been taught in primary school for basic numbers.  The links on this site provide a reminder of some of these.

According to the framework, pupils should be able to do the following:

Year 7

  • use efficient written methods to add and subtract numbers with up to 2 decimal places
  • multiply and divide 3-digit by 2-digit whole numbers, extending to multiplying and dividing decimals with 1 or 2 places by single-digit whole numbers
  • multiply and divide whole numbers by 0.5, 0.2, 0.1
  • use the order of operations

Year 8

  • use efficient written methods to add and subtract numbers with up to 2 decimal places
  • use efficient methods for multiplication and division of whole numbers and decimals, including decimals such as 0.6 or 0.06
  • use the order of operations including brackets

Year 9

  • use efficient written methods to add and subtract numbers and decimals of any size, including a mixture of large and small numbers with differing numbers of decimal places
  • multiply and divide whole numbers and decimals
  • use the order of operations including brackets and powers

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