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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.
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