estimating answers

Estimating Answers

Understand the importance of estimating answers in mathematics and real-life scenarios and develop strategies for using rounding to estimate answers to calculations.

Target Age:

Lesson Overview

By the end of this unit, students will be able to:

  1. understand the importance of estimation in mathematics and real-life scenarios;
  2. develop strategies for estimating answers to calculations;
  3. use estimation to check the reasonableness of answers and identify errors.

Curriculum Alignment: Key Stage 3: Number (R)

  • Use approximation through rounding to estimate answers and calculate possible resulting errors expressed using inequality notation a<x≤b
Last updated on: February 21, 2026

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