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Mathematics / Year 2 / Number and Algebra / Number and place value

Curriculum content descriptions

Explore the connection between addition and subtraction (ACMNA029)

Elaborations
  • becoming fluent with partitioning numbers to understand the connection between addition and subtraction
  • using counting on to identify the missing element in an additive problem
General capabilities
  • Numeracy Numeracy
ScOT terms

Subtraction,  Addition

Downloadable

Algebra: Foundation to Year 9

This comprehensive resource describes the progression of algebra-related ideas and algebraic thinking. The resource demonstrates examples of relevant teaching strategies, investigations, activity plans and connected concepts in algebra including teaching and cultural implications.

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Addition Year 3 - Calculate

This activity is designed to see if students are able to apply their addition strategies in order to find the total of their collection of cards. Often students will have a method for adding two numbers, but when asked to add a list of numbers they revert to less efficient methods.

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

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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Subtraction Strategies - Calculate

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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Salute - Calculate

This game gives students opportunities to practise addition and subtraction strategies and develop algebraic thinking by finding unknown values in additive equations.

Downloadable

AERO Ochre Maths Year 3 Unit 2 - Exploring calculation strategies

This sequence of 15 lessons will teach students various calculation strategies.

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Space Race Game (Introducing Algorithmic Thinking) - Calculate

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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Odd & Even Year 1 & 2 - Calculate

In this lesson students investigate odd and even numbers.

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Pattern & Algebra Year 2 - Calculate

The focus of this activity is to discover if students can use numbers to describe a pattern that it written as a description. From here we are interested in finding out if students can interpret the pattern, discover the rule and apply this rule to find missing or future terms.

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See & Say - Calculate

This class warm-up game focuses on practising addition and subtraction strategies and developing algebraic thinking by using a rule applied to a list of numbers.

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Make 10 - Calculate

This game challenges students to choose pairs of cards that sum to ten. The game develops students' skills of addition and subtraction, creating simple equations and using mathematical language to describe their thinking processes.

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Duck in a Bucket - Calculate

In this game for pairs or teams, students practise addition and subtraction of small numbers, using multiple strategies.

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Addition and Subtraction - Calculate

This game focuses on addition, subtraction and estimation. It can be played many times as the totals will often be different and the focus of the mathematics can change. There is a video included to help with how to play the game.

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Addition & Subtraction Year 2 - Calculate

The focus of this activity is to find out what students know about different addition strategies.

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Domino Bingo - Calculate

In this game, students add single digit numbers and subitise domino dot patterns.

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Crocodile and Shark (F–3) - Calculate

In this game students practise addition and subtraction of numbers from the face of a die, using multiple strategies.