Number Systems and Place Value · Number and Operations

Rounding and Estimation

Using rounding as a strategy to predict outcomes and check the reasonableness of answers.

Key Questions

  1. 1When is an estimated answer more useful than an exact one in real life?
  2. 2How do we decide whether to round to the nearest ten, hundred, or thousand?
  3. 3If two different numbers round to 500, what is the maximum possible difference between them?

NCCA Curriculum Specifications

NCCA: Primary - NumberNCCA: Primary - Estimating and Checking
Class/Year: 4th Class
Subject: Mastering Mathematical Thinking: 4th Class
Unit: Number Systems and Place Value
Period: Number and Operations

Suggested Methodologies

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