GCD stands for Greatest Common Divisor. It is also called HCF (Highest Common Factor). In simple words, it is the greatest number that can divide a particular set of numbers. For example, the Greatest ...

Dividing into a given ratio. You can use bar models to divide amounts in a given ratio. For example, Isabel and Geraint share their savings of £96 in the ratio 5 to 3. How much money does each person ...

Ratio When comparing two quantities (of the same kind), sometimes it is necessary to find out the relationship that one quantity bears to another, this comparison is made by considering what multiple, ...