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Bite 1:

Use the principle of equality

• Recognise equal differences and record them in number sentences

• Use the equals sign to mean 'the same as', rather than to perform an operation

• Apply the associative property of addition to forming multiples of 10

Recognise and explain the connection between addition and subtraction

• Use number relation principles to solve related problems

• Demonstrate how addition and subtraction are inverse operations

• Use the complement principle of addition and subtraction

• Explain and check solutions to problems, including by using the inverse operation