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