Mathematics / Year 4 / Number and Algebra / Patterns and algebra

Curriculum content descriptions

Find unknown quantities in number sentences involving addition and subtraction and identify equivalent number sentences involving addition and subtraction (ACMNA083)

Elaborations
  • writing number sentences to represent and answer questions such as: ‘When a number is added to 23 the answer is the same as 57 minus 19. What is the number?’
  • using partitioning to find unknown quantities in number sentences
General capabilities
  • Numeracy Numeracy
ScOT terms

Subtraction,  Addition,  Mathematical expressions

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Find unknown values: Year 4 – planning tool

This planning resource for Year 4 is for the topic of Find unknown values. Students further develop their algebraic thinking and strategies to find missing or unknown numbers in addition and subtraction related problems.

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Algebra: Foundation to Year 9

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reSolve: Algebra: Triangle Inequality

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reSolve: Algebra: Odds and Evens

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Work sample Year 4 Mathematics: Number: addition and subtraction

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Selected links to a range of interactive online resources for the study of number in Foundation to Year 6 Mathematics.

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TIMES Module 7: Number and Algebra: addition of whole numbers - teacher guide

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TIMES Module 2: Number and Algebra: addition and subtraction - teacher guide

This is a 29-page guide for teachers. The module introduces addition and subtraction of whole numbers.

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An interactive resource in which students learn how to add and subtract numbers that have up to two decimal places.