GCSE Maths OCR J560

Find the ratio of quantities in the form $a : b$ and simplify.

Find the ratio of quantities in the form $1 : n$.

e.g. $50 cm : 1.5 m = 50 : 150 = 1 : 3$

Split a quantity into two parts given the ratio of the parts.

e.g. £2.50 in the ratio 2 : 3

Express the division of a quantity into two parts as a ratio.

Calculate one quantity from another, given the ratio of the two quantities.

Split a quantity into three or more parts given the ratio of the parts.

Interpret a ratio of two parts as a fraction of a whole.

e.g. £9 split in the ratio 2 : 1 gives parts $\dfrac{2}{3} × £9$ and $\dfrac{1}{3} × £9$.

see also Fractions of a quantity, 2.01c

Solve simple ratio and proportion problems.

e.g. Adapt a recipe for 6 for 4 people.

Understand the relationship between ratio and linear functions.