VC2M3A02
extend and apply knowledge of addition and subtraction facts to 20 to develop efficient mental strategies for computation with larger numbers without a calculator
- partitioning using materials and part-part-whole diagrams to develop subtraction facts related to addition facts, such as 8 + 7 = 15 therefore 15 − 7 = 8 and 15 − 8 = 7
- using partitioning to develop and record facts systematically (for example, ‘How many ways can 12 monkeys be spread among 2 trees?’, 12 = 12 + 0, 12 = 11 + 1, 12 = 10 + 2, 12 = 9 + 3, …), explaining how they know they have found all possible partitions
- understanding basic addition and related subtraction facts and using extensions to these facts; for example, 6 + 6 = 12, 16 + 6 = 22, 6 + 7 = 13, 16 + 7 = 23, and 60 + 60 = 120, 600 + 600 = 1200
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Mental Maths Subtraction Posters
Use this set of subtraction posters in your classroom when teaching different mental maths strategies.
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The Mathematical Easter Egg Hunt – Whole Class Game
A differentiated whole class Easter egg hunt.
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Find Your Detective Call Sign Worksheet
An addition worksheet students use to find their own special detective call sign.
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Addition Maze – Dog and Bone Worksheet
A worksheet to use to practise finding missing addends.
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Money and Financial Mathematics - Middle Years Interactive PowerPoint
An engaging 44 slide interactive PowerPoint to use in the classroom when learning about money and financial mathematics
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Counting Back to Subtract – Maths Fact Game
Practise subtracting by counting backwards with a pair of printable subtraction games.
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Maths Activity Ideas for Parents - Addition and Subtraction
An information sheet for parents or carers to use when assisting children with addition and subtraction at home.
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Number Talks – Multiplication Representation Task Cards
Help your students discover different ways to represent multiplication with this set of number talk cards.
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2-Digit Subtraction Game - Dominoes
Use this printable set of double-digit subtraction dominoes to practice a variety of subtraction strategies.
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The Addition Quest – Whole Class Game
Find the hidden gems and place their numbers into the correct positions on the worksheet to solve the sums.
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Making Tens Subtraction Worksheet
Partition numbers to subtract with a printable subtraction worksheet.
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Subtraction Sausage Dog – Worksheet
A set of superb subtraction sausage dog worksheets.
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Ten Add Bowling Active Learning
A whole class active game that encourages learning through a physical setting.
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Friends of... 1 to 10 - BW
A set of 10 posters showing how different combinations of numbers connect to make the same number.
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Number Matching Puzzle - Division
A hands-on game to play when learning about dividing numbers.
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Number Matching Puzzle - Multiplication
A hands-on game to play when learning about multiplying numbers.
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Addition and Subtraction Strategies PowerPoints – Teaching Resource Pack
A collection of Teaching Presentations that explore strategies for the computation of addition and subtraction.
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Number Talks Teaching Resource Pack - Grade 3
A collection of number talks teaching resources that support meaningful and highly engaging conversations in the mathematics classroom.
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Maths Resource Packs for Parents - Addition and Subtraction
An extensive collection of resources for for parents to help Year 3 and Year 4 children with addition and subtraction.
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Maths Worksheet Maker
Easily create and diffentiate maths worksheets with a combination of addition, subtraction, multiplication and division facts.
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Addition Detectives
This Mathematics unit covers a range of mental computation strategies for addition.
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Exploring Subtraction Strategies Unit Plan
This Mathematics unit covers a range of mental computation strategies for subtraction.
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Bridging to Ten
A 60-minute lesson designed for students to recall 'friends of ten' facts and use this knowledge to solve addition sums.
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Compensation Strategy
A 60-minute lesson designed to build upon students' understanding of addition and subtraction by exploring compensation.
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Split Strategy
A 60-minute lesson designed to progress students' understanding of mental addition by partitioning numbers into place value to help them find a total.
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Concrete Materials
A 60-minute lesson to reinforce students' understanding of basic addition principles, using concrete materials.
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Jump or Split
A 60-minute lesson in which students will learn the jump and skip strategies to subtract.
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Think 'Addition' to Subtract
A 60-minute lesson in which students apply their knowledge of addition and subtraction as inverse operations to solve equations with missing addends.
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What Do You Know?
A 60-minute lesson in which students will revise strategies such as counting on, counting back, subtracting 10, and using known number facts.
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Trade It!
A 60-minute lesson in which students learn how to trade when subtracting.
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Frolic with Fact Families
A 60-minute lesson in which students explore the relationship between the members of fact families.
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Aim for a Zero-Tail
A 60-minute lesson in which students learn the strategy of making ten to subtract.