Topic: Number, Fractions, Decimals, Percentage, Ratio and Proportion (Higher - Unit 3)
| Specification References: N2.7 N2.7 Calculate with fractions, decimals and percentages. |
Candidates should be able to:
- calculate a fraction of a quantity
- calculate a percentage of a quantity
- use decimals to find quantities
- use fractions, decimals or percentages to calculate proportions of shapes that are shaded
- use fractions, decimals or percentages to calculate lengths, areas or volumes
Notes
This is part of the core number work required across all units. The core number work will be assessed so that it is linked to other specification references within this unit.
Candidates will not be required to calculate reverse percentage, repeated percentage change or compound interest in this unit.
Reverse percentage may be assessed in the Higher tier of Unit 1 or unit 2 (where numbers used will be consistent with a non-calculator examination).
Repeated percentage change and compound interest will only be assessed in Higher tier Unit 1.
For example, a 15% increase in the value Y, is calculated as 1.15 x Y. Unit 1 only.
For example, a 15% increase in value Y, followed by a 15% decrease is calculated as 1.15 x 0.85 x Y. Higher tier Unit 1 only.
Examples
- A rectangle measures 3.2cm by 6.8cm
It is cut into four equal smaller rectangles.
Work out the area of a smaller rectangle.
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