The Mystery of the Missing Addends

The Mystery of the Missing Addends

Worksheets

Mathematics Patterns & Algebra

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This resource has been designed to help students solve unknown in number sentence involving addition and subtraction. The worksheets outline the steps that need to be taken to isolate and solve the unknown, using the commutative properties of addition and inverse operations. This resource is part of a larger unit of work for Year 4- Missing Addends.

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Curriculum Codes

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

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

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

Linked Resources & Worksheets

Magic Maths Squares

Curriculum Code: AC9M4A01, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, ACMNA083, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 3, Year 4, Year 5

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Curriculum Code: MA1-CSQ-01, MA1-1WM, MA1-2WM, MA1-3WM, MA1-5NA, VCMNA106, AC9M3A01, VCMNA132, VCMNA139, MA2-1WM, MA2-2WM, MA2-3WM, MA2-5NA, ACMNA029, AC9M2N06, MA1-FG-01, ...

Year Level: Year 2, Year 3, Year 4

Subject: Mathematics, Number & Place Value, Patterns & Algebra

Category: Games & Activities, Resources

Pre & Primary Essentials Membership

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Fact Family Write and Wipe Blank Cards

Curriculum Code: MA1-CSQ-01, MA1-1WM, MA1-2WM, MA1-3WM, MA1-5NA, VCMNA106, AC9M3A01, VCMNA132, VCMNA139, MA2-1WM, MA2-2WM, MA2-3WM, MA2-5NA, ACMNA029, AC9M2N06, MA1-FG-01, ...

Year Level: Year 2, Year 3, Year 4

Subject: Mathematics, Number & Place Value, Patterns & Algebra

Category: Games & Activities, Resources

Pre & Primary Essentials Membership

Fact Family Write and Wipe Blank Cards

Missing Addends - Presentation

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Presentations

Primary + Unit Plans Membership

Missing Addends - Presentation

Missing Addends - Student Reference Card

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Resources

Pre & Primary Essentials Membership

Missing Addends - Student Reference Card

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Worksheets

Pre & Primary Essentials Membership

Make it Match

Finding Unknowns Poster Set

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 3, Year 4, Year 5

Subject: Mathematics, Patterns & Algebra

Category: Resources, Classroom Displays

Pre & Primary Essentials Membership

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The Balancing Act

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Worksheets

Pre & Primary Essentials Membership

The Balancing Act

Mysterious Missing Addends

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Worksheets

Pre & Primary Essentials Membership

Mysterious Missing Addends

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, AC9M3A01, MA2-RN-01, MA2-RN-02, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 3, Year 4

Subject: Mathematics, Patterns & Algebra

Category: Games & Activities

Pre & Primary Essentials Membership

Robot Repairs

Equivalence Jigsaw Puzzles

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Games & Activities

Pre & Primary Essentials Membership

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Part-Part-Whole Prickly Problems

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, AC9M3N03, MA2-RN-01, MA2-RN-02, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 2, Year 3, Year 4

Subject: Mathematics, Number & Place Value, Patterns & Algebra

Category: Games & Activities

Pre & Primary Essentials Membership

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Poppin Problems

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Games & Activities

Pre & Primary Essentials Membership

Poppin Problems

Missing Addend Quiz

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Resources

Pre & Primary Essentials Membership

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Missing Addend Challenge

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Worksheets

Pre & Primary Essentials Membership

Missing Addend Challenge

New 9.0 Curriculum

Maths Unit: Missing Addends

Curriculum Code: ACMNA083, VCMNA163, VCMNA164, MA2-1WM, MA2-2WM, MA2-3WM, MA2-8NA, AC9M4A01, MA2-AR-01, MA2-AR-02, MA2-MR-01, MA2-MR-02, ...

Year Level: Year 4

Subject: Mathematics, Patterns & Algebra

Category: Games & Activities, Resources, Worksheets, Unit Plans

Primary + Unit Plans Membership

Maths Unit: Missing Addends