MA20-03 Maths Coming soon
Share in a ratio when only a difference or one part is known
This lesson is coming soon.
In this lesson
Share a quantity in a given ratio when the total is not stated directly - only a difference between two parts or one part's value is given - and use the same reasoning to compare best value.
What it covers
- Find the value of one ratio part when only the difference between two parts is given
- Find the value of one ratio part when only one named part's value is given
- Use the multiplier from a ratio to compare which of two mixes or rates is better value
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 | R5 | Divide a given quantity into two parts in a given part : part or part : whole ratio |
| Cambridge IGCSE 0580 | C1.11 | Ratio and proportion |
| Cambridge IGCSE 0580 | E1.11 | Ratio and proportion |
| Edexcel GCSE 1MA1 | R5 | Divide a given quantity into two parts in a given part:part or part:whole ratio; express the division of a quantity into two parts as a ratio; apply ratio to real contexts and problems (such as those involving conversion, comparison, scaling, mixing, concentrations) |
| Edexcel IGCSE 4MA1 | F1.7B | Divide a quantity in a given ratio or ratios |
| Eduqas GCSE C300 | FR6 | Divide a given quantity into two parts in a given part:part or part:whole ratio; divide a given quantity into more than two parts; express the division of a quantity into two parts as a ratio; apply ratio to real contexts and problems (such as those involving conversion, comparison, scaling, mixing, concentrations) |
| Eduqas GCSE C300 | HR6 | Divide a given quantity into two parts in a given part:part or part:whole ratio; divide a given quantity into more than two parts; express the division of a quantity into two parts as a ratio; apply ratio to real contexts and problems (such as those involving conversion, comparison, scaling, mixing, concentrations) |
| OCR GCSE J560 | 5.01b | Split a quantity into two parts given the ratio of the parts. Express the division of a quantity into two parts as a ratio. Calculate one quantity from another, given the ratio of the two quantities. |
For teachers
This GCSE Maths lesson teaches share in a ratio when only a difference or one part is known. By the end, students should be able to share a quantity in a given ratio when the total is not stated directly - only a difference between two parts or one part's value is given - and use the same reasoning to compare best value. It works through three worked examples and the mistakes examiners report.