Conversions: percentages to decimals

‘Percent’ means ‘out of a hundred.’

So 55% means 55 out of a hundred.

To convert this to a decimal you need to divide 55 by 100.

You can do this by dividing 55 by 10:

55 divided by 10 = 5.5 and then divide by 10 again (because 10 x 10 = 100)

5.5 divided by 10 = 0.55

You can see that 55% or 55.0 % has become 0.55 as a decimal. So you might just want to ‘move’ the decimal point two places to the left - but don’t tell any mathematicians I said that!!!

Watch the next video for another example.

http://www.youtube.com/watch?v=66934Q4VjkU

http://www.math-aids.com/Percent/Convert_Between_PDF.html

(Select the ‘Percent to decimals’ option and your worksheet will be created. Uncheck other options)

http://www.mathsisfun.com/converting-percents-decimals.html

http://www.mathgoodies.com/lessons/vol4/percents_to_decimals.html

http://www.qub.ac.uk/keyskills/WN/NumeracyPerctges.html#ptod

http://www.bbc.co.uk/bitesize/ks3/maths/number/fractions_decimals_percentages/revision/1/ (Revision of fractions, decimals, percentages)

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