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The Open University

Rounding and estimation

The Open University via OpenLearn

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Overview

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Scientific calculators are a wonderful invention, but theyre only as good as the people who use them. If you often get an unexpected or ridiculous result when you press the enter button, this free course, Rounding and estimation, is for you. Learn how to do a calculation correctly and get the right answer every time.

Syllabus

  • Introduction
  • Learning outcomes
  • 1 Rounding
  • 1 Rounding
  • 1.1 Rounding in daily life
  • 1.2 Rounding whole numbers
  • 1.2.1 Rounding to the nearest hundred
  • 1.2.2 Rounding to the nearest ten
  • 1.3 Rounding in general
  • 1.3.1 Try some yourself
  • 1.4 Rounding decimals
  • 1.4.1 Try some yourself
  • 1.5 Significant figures
  • 1.5.1 Try some yourself
  • 1.6 Significant figures for numbers less than one
  • 2 Estimation
  • 2 Estimation
  • 2.1 Using estimations
  • 2.1.1 Try some yourself
  • 3 Checking your answers
  • 3 Checking your answers
  • 3.1 Have I done the right calculation?
  • 3.1.1 Try some yourself
  • 3.2 Have I used the correct order for my calculation?
  • Try some yourself
  • 3.3 Have I given due consideration to units of measurement?
  • 3.3.1 Try some yourself
  • 3.4 Did I make a rough estimate to act as a check?
  • 3.4.1 Try some yourself
  • 3.5 Does the answer make sense in the real world?
  • 3.5.1 Try some yourself
  • 3.6 Additional practice
  • 3.6.1 Try some yourself
  • 4 OpenMark quiz
  • 4 OpenMark quiz
  • Conclusion
  • Acknowledgements

Tags

Reviews

5.0 rating, based on 1 Class Central review

4.3 rating at OpenLearn based on 12 ratings

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  • Profile image for Ahmad Mohammad Uri
    Ahmad Mohammad Uri @URI1311
    1
    This course has a lot of activities as well as examples, I thought I was in for a simple rounding and estimations but it is more than that, they dive in into those topics at different perspectives or subjects to be exact. From simple to complex examples, it is wonderful as it truly widened my horizons on this topic.

    It may take 5 hours or more if you do all the activities and examples as to better understand or appreciate, it is best to review it once your done.
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