Free course

Rounding and estimation

Free statement of participation on completion

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.

Course learning outcomes

After studying this course, you should be able to:

round a given whole number to the nearest 10, 100, 1000 and so on
round a decimal number to a given number of decimal places or significant figures
use rounded numbers to find rough estimates for calculations
use a calculator for decimal calculations involving +, −, × and ÷, giving the answer to a specified accuracy (e.g. decimal places or significant figures) and checking the answer by finding a rough estimate
check the answers to calculations by ensuring that the correct calculation has been done, in the correct order.

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First Published: 10/08/2012

Updated: 18/04/2019

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Average rating 4.3 out of 5, based on 12 ratings.

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Course reviews

Ahmad Mohammad Uri 22 October 2024 4:48PM

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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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Michael Mills 27 February 2023 12:06PM

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Very helpful

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More reviews Total 7 reviews

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Rounding and estimation

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