Step 4 Objective
Understand percentage as the number of parts in every 100 and find simple percentages of small whole-number quantities.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Examples of what pupils should know and be able to do
Use mental methods. For example find:
- 10% of £20 by dividing by 10;
- 5% of £5 by finding 10% and then halving;
- 15% of 40 by finding 10% then 5% and adding the results together;
of 24.
Use informal written methods, including using jottings. For example find:
- 11% of £2800 by calculating 10% and 1% and adding the results together
- 70% of 130 g by calculating 10% and multiplying this by 7 or by calculating 50% and 20%.