MA20-01 Maths Coming soon
Ratio notation, simplifying and unitary form
MA20-01
This lesson is coming soon.
In this lesson
Write a ratio in its simplest form, convert it into unitary (1:n) form, and state one part of a ratio as a fraction of the whole.
What it covers
- Write a ratio in its simplest form using a common factor
- Convert a ratio into unitary form 1:n (and understand why the order matters)
- Read one part of a ratio as a fraction of the whole ratio
- Relate ratio notation to fraction notation for the same comparison
Key words
For: AQA GCSE 8300, Cambridge IGCSE 0580, Edexcel GCSE 1MA1, Edexcel IGCSE 4MA1, Eduqas GCSE C300, OCR GCSE J560
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8300 | R4 | Use ratio notation, including reduction to simplest form |
| AQA GCSE 8300 | N11 | Identify and work with fractions in ratio problems |
| Cambridge IGCSE 0580 | C1.11 | Ratio and proportion |
| Cambridge IGCSE 0580 | E1.11 | Ratio and proportion |
| Edexcel GCSE 1MA1 | R4 | Use ratio notation, including reduction to simplest form |
| Edexcel GCSE 1MA1 | N11 | Identify and work with fractions in ratio problems |
| Edexcel IGCSE 4MA1 | F1.7A | Use ratio notation, including reduction to its simplest form and its various links to fraction notation |
| Eduqas GCSE C300 | FR5 | Use ratio notation, including reduction to simplest form |
| Eduqas GCSE C300 | HR5 | Use ratio notation, including reduction to simplest form |
| Eduqas GCSE C300 | FN11 | Identify and work with fractions in ratio problems |
| Eduqas GCSE C300 | HN11 | Identify and work with fractions in ratio problems |
| OCR GCSE J560 | 5.01a | Find the ratio of quantities in the form a : b and simplify. Find the ratio of quantities in the form 1 : n. |
| OCR GCSE J560 | 5.01c | Interpret a ratio of two parts as a fraction of a whole. |
For teachers
This GCSE Maths lesson teaches ratio notation, simplifying and unitary form. By the end, students should be able to write a ratio in its simplest form, convert it into unitary (1:n) form, and state one part of a ratio as a fraction of the whole. It works through three worked examples and the mistakes examiners report.