Expressing Quantities as a Percentage. Stage 4 -Year 7 Percentages Expressing Quantities as a Percentage. Press Ctrl-A ©2009 – Not to be sold/Free to use

Expressing Quantities as Percentage (1/1) To express one quantity as a percentage of another. 1. Write them as a fraction. 2. Convert them to a percentage. Write 11g of 20g as a percentage. 5 11 20 100 1 100% x = 55% 1 End of Page

Expressing Quantities as Percentage (2/1) To express one quantity as a percentage of another. 1. Write them as a fraction. 2. Convert them to a percentage. Write 50 millilitre of 1 litre as a percentage. 50 1000 100% 100 1 x = 5% End of Show