Additive Relations
S2 Addition & Subtraction
Aligned to the NSW Syllabus for The Australian curriculum (https://educationstandards.nsw.edu.au/wps/portal/nesa/home)
- outcomes and content listed below
- outcomes and content listed below
Jet Ski Addition - arcademics
Simple Farm Addition - prongo
Maths Invaders - Addition, Subtraction, Multiplication & Division - mathsframe
Post Sorting Calculations - topmarks
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Tug Team Addition - arcademics
Bingo Addition - topmarks
Arrow Cards - ict games
Deep Sea Dual - nctm
Dart Board Addition - topmarks
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Alien Addition - arcademics
Funky Mummy - addition, subtraction & multiplication- ict games
Minus Mission - arcademics
Vertical Addition Demonstration - ict games
Vertical Subtraction Demonstration - ict games
Mummy Numberlines- ict games
Real Life Algebra - Australian Curriculum
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The Australian Mint - all about Australian Currency; history; interactive games, quizzes and worksheets
Reserve Bank of Australia - activities and games
Giving Change - mathsisfun
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Change Maker - tinybop
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Giving Change - word problems - rounding to 5c IXL
Giving Change - number problems 2 - rounding to 5c IXL
Australian Money Interactive Word Mat - free download from twinkl
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Toyshop Money Games - topmarks
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Loose Change Game - crackerjack
Interactive Australian Coins - toytheater
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Working With Money Australian Curriculum
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Addition and Subtraction - a lesson in renaming. Australian Curriculum
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A mental computation lesson with cards - Australian Curriculum
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Create A Book Order - (subtraction) Australian Curriculum
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Online Maths Games - from au.mathsgames.com - Year 3
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Online Maths Games - from au.mathsgames.com - Year 4
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Syllabus Outcomes
MAO-WM-01 Develops understanding and fluency in mathematics through exploring and connecting mathematical concepts, choosing and applying mathematical techniques to solve problems, and communicating their thinking and reasoning coherently and clearly
MA2-AR-01 Selects and uses mental and written strategies for addition and subtraction involving 2- and 3-digit numbers
MA2-AR-02 Completes number sentences involving addition and subtraction by finding missing values
MA2-AR-01 Selects and uses mental and written strategies for addition and subtraction involving 2- and 3-digit numbers
MA2-AR-02 Completes number sentences involving addition and subtraction by finding missing values
Content
Additive relations A
Use the principle of equality
Partition, rearrange and regroup numbers to at least 1000 to solve additive problems
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 (Reasons about relations)
- Use number relation principles to solve related problems (Reasons about relations)
- Demonstrate how addition and subtraction are inverse operations
- Use the complement principle of addition and subtraction (Reasons about relations)
- Explain and check solutions to problems, including by using the inverse operation
- 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
- Recognise the relationship between dollars and cents
- Represent equivalent amounts of money using different denominations
- Perform calculations with money, including finding change
Partition, rearrange and regroup numbers to at least 1000 to solve additive problems
- Use quantity values and non-standard partitioning to solve addition and subtraction problems
- Model addition with and without regrouping and record the method used
- Model subtraction with and without regrouping and record the method used
- Use an algorithm with understanding to record addition and subtraction calculations, where efficient, involving 3-digit numbers
- Recognise how hundreds are exchanged in subtraction algorithms requiring regrouping
- Recognise when mental strategies would be more efficient than a vertical algorithm for subtraction (Reasons about relations)
- Solve subtraction questions with missing digits given the difference (Reasons about relations)
- Use estimation to check the validity of solutions to addition and subtraction problems, including those involving money
- Reflect on a chosen strategy for solving a problem, considering whether it can be improved
- Interpret problems involving money as requiring either addition or subtraction
- Calculate missing numbers by completing number sentences involving addition and subtraction (Algebraic reasoning)
- Find the missing number in an equivalent number sentence involving operations of addition or subtraction on both sides of the equals sign (Algebraic reasoning)
- Create word problems that correspond to given addition and subtraction number sentences
updated Feb 2023
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