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This policy aims to develop, model and explain core understandings and mathematical principles and progression to ensure consistency in the teaching and learning of mathematics in our schools.

The focus of this policy is the calculation of the four mathematical operations with an emphasis on written strategies to clarify processes and understanding. Mental strategies are discretely taught and linked to written strategies.


The overall aims of this policy are that, when children leave primary school they:


  • have a secure knowledge of number facts and a good understanding of the four operations.
  • be fluent in the recall and application of number facts.
  • be fluent in written and mental calculation methods.
  • be able to explain the best strategy to use.
  • be able to use jottings and drawings to aid calculation and to explain and justify answers.
  • understand number by using estimating before calculating and checking systematically using the inverse.
  • Apply understanding by breaking problems down into a series of simpler steps, confidently using the four operations in the process.
  • be able to identify when a calculator is the best tool for the task and use this primarily as a way of checking rather than simply a way of calculating.
  • be able to explain their strategies to calculate and using spoken language, give justification, argument or proof of their reasoning

Early Years                                                                         


Year 1 & Year 2

Year 3 & Year 4

Year 5 &  Year 6

Adding Double Numbers in Year 1