The Power of Place Value · Number Sense

Rounding and Estimation Strategies

Developing mental benchmarks to approximate values and assess the reasonableness of mathematical claims.

Key Questions

  1. 1When is an estimate more useful than an exact calculation in real life?
  2. 2How do we decide which multiple of ten or hundred a number is closest to?
  3. 3How can rounding help us identify errors in our final answers?

NCCA Curriculum Specifications

NCCA: Primary - NumberNCCA: Primary - Estimating and Checking
Class/Year: 4th Year (TY)
Subject: Mathematical Mastery: Exploring Patterns and Logic
Unit: The Power of Place Value
Period: Number Sense

Suggested Methodologies

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