from The Open University
Alternatively you can skip the navigation by pressing 'Enter'.
The Great British Year: SpringMonday, 12th October 2015 21:00 - BBC FourThe white shades to green; the landscape awakens. Read more: The Great British Year: Spring
The Secret Life of Books: Series Two: The Faerie QueeneTuesday, 13th October 2015 20:30 - BBC Four
The Secret Life of Books: Series Two: The Faerie QueeneWednesday, 14th October 2015 02:30 - BBC Four
Countdown To Life: The Extraordinary Making Of You: The First 8 WeeksWednesday, 14th October 2015 02:45 - BBC Two
The Bottom Line: Autumn 2015: Crisis at VW: A Bottom Line SpecialAvailable for over a yearIn this special episode of The Bottom Line, Evan Davis and his guests discuss the emissions scandal at Volkswagen. Read more: The Bottom Line: Autumn 2015: Crisis at VW: A Bottom Line Special
The Rules of the GameHow do governing bodies of sport ensure fair play on and off the pitch? Kath Woodward... Read more: The Rules of the Game
OpenLearn Live: 12th October 2015Meet Eastern Europe's first black mayor - and then more free learning through the day. Read more: OpenLearn Live: 12th October 2015
Estimating the cost of equityThis free course, Estimating the risk and return of a share, examines how investors determine the... Try: Estimating the cost of equity now
Succeed with maths – Part 1If you feel that maths is a mystery that you want to unravel then this short 8-week course is for... Try: Succeed with maths – Part 1 now
Squares, roots and powers
From paving your patio to measuring the ingredients for your latest recipe, squares,...
From paving your patio to measuring the ingredients for your latest recipe, squares, roots and powers really are part of everyday life. This free course, Squares, roots and powers, reviews the basics of all three and also describes scientific notation, which is a convenient way of writing or displaying large numbers.
After studying this course you should be able to:
- evaluate the squares, cubes and other powers of positive and negative numbers with or without your calculator
- estimate square roots and calculate them using your calculator
- describe the power notation for expressing numbers
- use your calculator to find powers of numbers
- multiply and divide powers of the same number
- understand and apply negative powers, the power 0 and the power 1 for any number
- express any given number in scientific notation
- convert a number from scientific notation to conventional decimal form
- use scientific notation and the rules of powers to find estimates for calculations
- read results displayed in scientific notation on your calculator.
- Current section: Introduction
- Learning outcomes
- 1 Squares, cubes and roots
- 2 Powers
- 3 Scientific notation
- 4 Open Mark quiz
Study this free course
Enrol to access the full course, get recognition for the skills you learn and track your progress. Make your learning visible!
Squares, roots and powers
This free course, Squares, roots and powers, reminds you about powers of numbers, such as squares and square roots. In particular, powers of 10 are used to express large and small numbers in a convenient form, known as scientific notation, which is used by scientific calculators.
Enrol to get a record of achievement
By enrolling on this course and setting up a free Open University account you can track your progress in My OpenLearn. When you’ve finished you can print off the free activity record to demonstrate your learning.
This OpenLearn course provides a sample of Level 1 study in.
This is an extract from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Mathematics Education courses or view the range of currently available OU Mathematics Education courses.
Copyright & revisions
Originally published: Friday, 10th June 2011
Last updated on: Wednesday, 29th April 2015
- Creative-Commons: The Open University is proud to release this free course under a Creative Commons licence. However, any third-party materials featured within it are used with permission and are not ours to give away. These materials are not subject to the Creative Commons licence. See terms and conditions. Full details can be found in the Acknowledgements section.
- This site has Copy Reuse Tracking enabled - see our FAQs for more information.
If you enjoyed this, why not follow a feed to find out when we have new things like it? Choose an RSS feed from the list below. (Don't know what to do with RSS feeds?)
Remember, you can also make your own, personal feed by combining tags from around OpenLearn.