2- & 3-Digit Addition & Subtraction Word Problems Bar Model Part Part Whole

Looking for a purposeful way to help students tackle multi-digit addition and subtraction with confidence and understanding?

This resource is designed to explicitly teach students how to use bar models to represent and solve addition and subtraction problems, supporting them to visualise quantities, relationships, and unknowns through meaningful word problems.

Rather than relying on guesswork or disconnected procedures, students use bar models to represent part–part–whole and comparison relationships, helping them reason logically and choose efficient solution strategies. Each problem promotes flexible thinking, strong number sense, and a deeper conceptual understanding of addition and subtraction.

HOW YOU CAN USE THIS RESOURCE:

❇️ Explicitly teach and reinforce addition and subtraction using bar models

❇️ Support students to visualise number relationships in word problems

❇️ Small group or guided maths instruction

❇️ Whole class rotations or maths stations

❇️ Relief-teacher-friendly lessons with minimal prep

WHAT'S INCLUDED:

✅ 40x Word Problem Task Cards

✅ 4x Levels of Number Complexity Differentiation

• 10x two-digit plus two-digit problems
• 10x two-digit minus two-digit problems
• 10x three-digit plus three-digit problems
• 10x three-digit minus three-digit problems

✅ 2x Levels of Strategy Support Differentiation

• Empty strategy model cards
• Partially filled strategy model cards

✅ PDF Version

• 2x Colour options - minimal colour and black & white
• Empty strategy model worksheet
• 2x recording sheets
• Answers

✅ 3x Digital Versions

• MS Powerpoint
• Google Slides

✅ 2x Self-checking options - no teacher marking!

• Provide access to the Google Form for checking answers
• Print the self-checking cards double sided

CLICK THE PREVIEW FOR A CLOSER LOOK!

WHY YOU'LL LOVE THIS RESOURCE:

✳️ Explicit strategy support — builds confidence and number sense

✳️ Word problems that encourage thinking & reasoning

✳️ Minimal prep — just print and go or assign digitally

✳️ Works for whole class, small groups or interventions

✳️ Helps students see subtraction as strategic thinking

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