Secure fluency in addition and subtraction facts that bridge 10, through continued practice (2)

Description

The number of facts to be learnt is reduced when commutativity is applied and pupils recognise that 7 + 5, for example, is the same as 5 + 7.

Automaticity in subtraction facts should also be developed through the application of the relationship between addition and subtraction, for example, pupils should recognise that if  7 + 5 = 12  then 12 – 5 = 7 .