Securing understanding of percentages
I can manipulate percentages of an amount with a representation.
Securing understanding of percentages
I can manipulate percentages of an amount with a representation.
Lesson details
Key learning points
- Percentages of amounts can be found by combining known percentages
- Percentages of amounts can be represented and found using a bar model
- Percentages of amounts can be represented and found using double number lines
- Percentages of amounts can be represented and found using ratio tables
Common misconception
When finding 10% we divide by 10, so when finding 5% we divide by 5.
Use a bar model to show the division of 10 means one tenth of the amount. When dividing by 5 it means one fifth has been found.
Keywords
Proportion - Variables are in proportion if they have a constant multiplicative relationship.
Equivalent fractions - Two fractions are equivalent if they have the same value.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
15% of 700 -
105
25% of 600 -
150
20% of 800 -
160
90% of 140 -
126
35% of 900 -
315
1% of 6000 -
60
Exit quiz
6 Questions
Bar model -
Good visual representation. Bars can be split in any way needed.
Double number line -
Good visual representation with scaled lines.
Ratio table -
Concise without visual representation and quick to construct.
