Tuesday, 23 February 2010

Maths : Percentages - decimals - fractions : converting

Today we tried to make sense of the fraction/decimal/percent issue.
We tried to get across that fractions, decimals and percentages are
simply a way of expressing the same thing - ie parts of a whole.

To do this we converted fractions to decimals to percentages

To convert a fraction to a decimal:

numerator divided by denominator = decimal

To convert the resulting decimal to a percentage

decimal x 100 = percentage

Thi8s was trialled on a calculator and we completed a sheet of
fraction conversions ranging from 1/2 to 7/8

Extension : those completing the sheet with a calculator attempt the
same exercise without a calculator!!

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