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Numbers, units and arithmetic

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Do fractions and decimals make you apprehensive about maths? Do you lack confidence in dealing with numbers? If so, then this free course, Numbers, courses and arithmetic, is for you. The course will explain the basics of working with positive and negative numbers and how to multiply and divide with fractions and decimals.

After studying this course, you should be able to:

  • write whole numbers and decimals in place-value columns and compare their sizes
  • multiply and divide whole numbers and decimals by 10, 100, 1000 and so on
  • indicate given fractions on a diagram and find equivalent fractions for a given fraction
  • mark numbers on a number line
  • choose appropriate units for a given purpose.

By: The Open University

  • Duration 5 hours
  • Updated Wednesday 16th March 2016
  • Introductory level
  • Posted under Mathematics Education
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Numbers, units and arithmetic


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This free course, Numbers, units and arithmetic, will help you to revise whole numbers, decimals and fractions, both positive and negative. You should know when and how to add, subtract, multiply and divide. Although you may have a calculator, you still need to do simple calculations in your head or on paper. Such calculations could be to estimate the size of an answer, as a check for your calculator work.

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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