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

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View on Australian Curriculum website Australian Curriculum, Assessment and Reporting Authority
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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Work sample Year 4 Mathematics: Number: addition and subtraction

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This work sample demonstrates evidence of student learning in relation to aspects of the achievement standards for Year 4 Mathematics. The primary purpose for the work sample is to demonstrate the standard, so the focus is on what is evident in the sample not how it was created. The sample is an authentic representation ...

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Subtraction Year 3 & 4 - Calculate

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This activity is designed to encourage students to develop and explain different strategies to solve subtraction problems.

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Four in a Row - Calculate

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This game played in pairs or small groups challenges students to create equations using numbers rolled on ten-sided dice.

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Find unknown values: Year 4 – planning tool

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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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Space Race Game (Introducing Algorithmic Thinking) - Calculate

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Space Race is a simple board game that teachers can use to introduce the concept of algorithmic sequencing to students. The teaching points provided with the game assist teachers to introduce the use of an algorithm (a simple set of mathematical instructions) to describe the trajectory of an object across a grid plane from ...

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Interactive

The take-away bar: go figure

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This tutorial is suitable for use with a screen reader. It explains strategies for solving subtractions in your head such as 87-39. Work through sample questions and instructions explaining how to use linear partitioning techniques. Solve subtractions by breaking them up into parts that are easy to work with, work out each ...

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Online

Literacy and numeracy improvement: a whole-school approach

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This teacher resource describes how 74 public schools in metropolitan, regional and rural Western Australia used three major components of the school improvement cycle to achieve significant improvement in the literacy and numeracy learning outcomes of their students. The resource is organised in nine sections: Summary, ...

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Online

Mathematical modelling: Year 4 – planning tool

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This planning resource for Year 4 is for the topic of Mathematical modelling. Students use mathematical modelling to solve practical problems involving additive and multiplicative situations including financial contexts. They formulate problems using number sentences and choose efficient calculation strategies.

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Addition Strategies - Calculate

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Regular practise of addition facts can help children build their confidence in maths.

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Even and Odd Numbers - Calculate

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In this activity let’s look at what happens when we add, subtract and multiply pairs of even numbers, pairs of odd numbers, or even a mix of even and odd numbers!

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Park Ranger Problem Solving: An ‘Addition & Subtraction’ Rich Task for Years 3–4 - Calculate

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The aim of this task is to provide a rich, contextual activity through which students can begin to explore the addition and subtraction of one- and two-digit of numbers in everyday contexts.

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Crocodile and Shark (4–6) - Calculate

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In this game students practise addition and subtraction of 2-digit numbers, using multiple strategies.

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Work sample Year 4 Mathematics: Odd and even

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Subtraction Strategies - Calculate

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This game gives students opportunities to practice subtraction skills and to learn subtraction strategies, including the jump strategy, the split (or partition) strategy, compensation and the count-up to strategy (sometimes called the Shopkeeper’s method).

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The focus of this activity is to find out what students know about addition of decimals and what are some of the different strategies students are able to use and explain. Do students prefer to use equations or do students rely more on empty number lines?

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Students make calculations with money.

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