Adding 3-Digit Numbers (With Exchange)
Students learn and apply the column addition method with regrouping across tens and hundreds.
Key Questions
- Explain what is actually happening to the value of the numbers when we carry a ten into the next column.
- Analyze how using the inverse operation helps check if our calculation is correct.
- Justify when a written method is more reliable than a mental strategy.
National Curriculum Attainment Targets
Suggested Methodologies
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Planning templates for Mathematics
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
unit plannerMath Unit
Plan a multi-week math unit with conceptual coherence: from building number sense and procedural fluency to applying skills in context and developing mathematical reasoning across a connected sequence of lessons.
rubricMath Rubric
Build a math rubric that assesses problem-solving, mathematical reasoning, and communication alongside procedural accuracy, giving students feedback on how they think, not just whether they got the right answer.
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