Key Stage 4 (GCSE) · Years 10-11 · Ratio, proportion and rates of change
R5divide 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)
GCSE subject content
GCSE specifications in mathematics should require students to 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)
Tier: This item is set in standard type: all students develop confidence and competence with it.
Source: Department for Education, GCSE mathematics: subject content and assessment objectives. Crown copyright information reproduced under the Open Government Licence v3.0.
uk-gcse-ma-r-05. The DfE numbers this item 5 within Ratio, proportion and rates of change; the R5 form follows the awarding bodies' convention.Relevant worksheets
These resources support parts of the requirement. They are not presented as a complete assessment of every clause.
Related teaching units
These existing units provide relevant lesson material. A dedicated unit may still be needed where the requirement is broader.