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Students explore the additive identity by completing open number sentences.

Students explore the additive identity by deciding whether addition and subtraction number sentences are true or false.

Students use the additive identity and the commutative property to assist them to solve simple equations without calculating.

Students add the numbers shown on three dice.

Students show how to solve some addition problems.

Students answer questions that involve adding two or three numbers.

Students solve addition maths problems and show their strategy for working it out.

Students work out which row of coins represents a given amount.

Students write number sentences for story problems, and create story problems from number sentences.

Students to show how they estimate in some addition problems.

Students complete addition arrays by selecting from given numbers.

Students complete addition arrays by selecting from given numbers.

Students explore the additive identity by deciding whether addition and subtraction number sentences are true or false.

Students solve different forms of subtraction equations.

Students find and write the numbers to complete equations that add to 10.

Students complete open number sentences to show their understanding of equality.

Students complete open number sentences to show their understanding of equality.

For this NEMP task students calculate the answers to a series of subtraction problems.

Students find and write the numbers to complete equations that add to 10 or 20.

Students use addition to calculate possible scores in a fairground game.

Students perform addition calculations based on information given in a table.

Students solve different forms of addition equations.

Students calculate the length of a builder's string line.

Students use number lines to show their understanding of commutativity.

Students use number lines to show their understanding of commutativity.