An effective CV should clearly demonstrate the value of hiring you, and numbers provide the perfect means of doing this. Fill you CV with quantifiable facts and figures, and recruiters will be able to gain a much better understanding of your work and impact.
For example, instead of simply stating,
“I manage the department budget”
Expand on this statement and include numbers such as,
“Managing a departmental budget of £10k per month”
Adding numbers and timescales like these gives readers a much better idea of your responsibilities and allows them to compare you to other candidates very easily.