Rounding to the Nearest 10 and 100
Developing mental benchmarks to approximate values to the nearest ten and hundred.
Key Questions
- Explain how to decide which multiple of ten or hundred a number is closest to.
- Predict the outcome of rounding a number ending in 5.
- Justify the importance of rounding in everyday situations.
NCCA Curriculum Specifications
Suggested Methodologies
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Planning templates for Mathematical Mastery: Exploring Patterns and Logic
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.
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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.
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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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