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# Maths Unit: Connecting Addition and Subtraction

Description

This unit has been created to assist students in recognising and explaining the connection between addition and subtraction as inverse operations.

The unit contains a step-by-step presentation, posters, worksheets, games, and a quiz.

At the completion of the unit, an assessment has been included to monitor student understanding.

Suitable for
• Fast Finishers
• Relief Teachers
• Parents
Lesson Structure
• Individual Activity
• Rotations / Group Work
• Class Activity
Curriculum Codes

AC9M3A01 9

Recognise and explain the connection between addition and subtraction as inverse operations, apply to partition numbers and find unknown values in number sentences

ACMNA054 8.4

Recognise and explain the connection between addition and subtraction

ACMNA029 8.4

Explore the connection between addition and subtraction

VCMNA132

Recognise and explain the connection between addition and subtraction

VCMNA139

Use a function machine and the inverse machine as a model to apply mathematical rules to numbers or shapes

VCMNA106

Explore the connection between addition and subtraction

MA2-1WM old

Uses appropriate terminology to describe, and symbols to represent, mathematical ideas

MA2-2WM old

Selects and uses appropriate mental or written strategies, or technology, to solve problems

MA2-3WM old

Checks the accuracy of a statement and explains the reasoning used

MA2-5NA old

Uses mental and written strategies for addition and subtraction involving two-, three-, four- and five-digit numbers

MA2-RN-01 new

Applies an understanding of place value and the role of zero to represent numbers to at least tens of thousands

MA2-RN-02 new

Represents and compares decimals up to 2 decimal places using place value

MA2-AR-01 new

Selects and uses mental and written strategies for addition and subtraction involving 2- and 3-digit numbers

MA2-AR-02 new

Completes number sentences involving addition and subtraction by finding missing values