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Connecting Addition and Subtraction - Presentation
3 Primary + Unit Plans Presentations Mathematics Patterns & Algebras 23 Pages

Connecting Addition and Subtraction - Presentation

This presentation is a great resource for teachers to use when introducing the connection between addition and subtraction as inverse operations and how to solve unknowns in number sentences. The presentation provides a variety of examples and practice activities for teachers to use as scaffolds for student learning.

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Learning goals

  • We are learning to use inverse relationships between addition and subtraction to find unknown values using different strategies.
  • We are learning to use number sentences and partitioning to demonstrate the connection between addition and subtraction.
  • We are learning to use counting-on and partitioning to understand the connection between addition and subtraction.

Curriculum alignment

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
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

Australian Curriculum covers QLD / SA / WA / NT / TAS / ACT.

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