Estimation by rounding

A FULL LESSON on estimation.

Assumed prior knowledge:

  • Percentages of amounts
  • Rounding with significant figures and decimals.

We are learning about: Estimation by rounding.
We are learning to: Use estimation to solve real world problems.

Differentiated objectives:

  • Developing learners will be able to round to a given number of decimal places or significant figures.
  • Secure learners will be able to estimate outcomes using significant figures.
  • Excelling learners will be able to apply their understanding of estimation to solve real world problems.

Starter: Rounding spider (Inspired by alutwyche)
Main: Numerical, following into contextualised, problems. (First problem inspired by DanWalker)
Plenary: Fermi estimation style question.


Save for later
  • Question-2-Printable---A5.pdf
  • Questions-3-8-Printable---A5.pdf
  • Starter-Printable-A5.pdf
  • 2-Lesson---Estimation.pptx

About this resource


Created: Aug 3, 2018

Updated: Nov 4, 2018

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Creative Commons "Sharealike"