Step 6 Objective
Recognise the equivalence of percentages, fractions and decimals; calculate simple percentages and use percentages to compare simple proportions.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
What sets of equivalent percentages, fractions and decimals do you know?
Explain how you can use these to find other equivalent sets.
How would you use a calculator to find 12% of ... using:
- the × and ÷ keys;
- only the × key?
Why do both work? Which method is more efficient?
10% is the same as 
, so 20% must be the same as 
. Is this true or false? Why?
What percentages of given quantities can you easily work out in your head? Talk me through a couple of examples.
When calculating percentages of quantities, what percentage do you usually
start from? How do you use this percentage to work out others?