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Squares, roots and powers

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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 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.

By: The Open University

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Squares, roots and powers


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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.

This OpenLearn course provides a sample of level 1 study in Mathematics [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] .

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