Ratio

Ratio

1. and

   • Proportion
     • Relating parts to the whole
   • Example: 2 Red and 3 Green cubes
     • Red to green - 2 : 3 or 2 for every three
     • Red 2 in every 5 and Green 3 in every 5
     • So can you write ratio as proportion?
   • Lesson By Mrs Atluri 20/5/2013

2. Relating parts to one another

   • Expressing as ratio
     • Simplifying
   • Problem solving
     • Sharing
       • Unitary Method: Finding the value of one part
         • Find the value of one part by dividing the amount into total number of parts
           • Percentages
             • Tax
             • Discount and appreciation
           • Pie charts
           • Time, speed and distance
           • Calculating Salaries/Bills
           • Similarity and enlargements
           • Better value for money
           • Recipes
           • Areas of sectors, arc length
           • Dimensions and formulae