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# Maths Unit: Missing Addends

Description

This detailed unit plan guides teachers and students through finding unknown quantities in number sentences involving addition and subtraction. The unit plan contains a step-by-step presentation, posters, a student reference card, worksheets, activities, games and more.

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

AC9M4A01 9

Find unknown values in numerical equations involving addition and subtraction, using the properties of numbers and operations

ACMNA083 8.4

Find unknown quantities in number sentences involving addition and subtraction and identify equivalent number sentences involving addition and subtraction

VCMNA163

Use equivalent number sentences involving addition and subtraction to find unknown quantities

VCMNA164

Define a simple class of problems and solve them using an effective algorithm that involves a short sequence of steps and decisions

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

MA2-8NA old

Generalises properties of odd and even numbers, generates number patterns, and completes simple number sentences by calculating missing values

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

MA2-MR-01 new

Represents and uses the structure of multiplicative relations to 10 × 10 to solve problems

MA2-MR-02 new

Completes number sentences involving multiplication and division by finding missing values