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Bite 3

Select strategies flexibly to solve addition and subtraction problems of up to 3 digits

• Apply known mental strategies that use partitioning to add and subtract, such as bridging the decades

• Use the compensation strategy to add and subtract (Reasons about relations)

• Apply the levelling and constant difference strategies (Reasons about relations)

• Represent solutions to addition and subtraction problems, including word problems, using an empty number line or bar model

• Compare and evaluate strategies used to solve addition and subtraction problems, reasoning which strategy may be most efficient