Ratio Flashcards

A way of comparing two or more quantities, showing the relative sizes of these quantities.

Divide all parts of the ratio by their highest common factor (HCF).

Ratios that represent the same relationship between quantities, e.g., 2:4 is equivalent to 1:2.

Add the parts of the ratio, divide the total quantity by the sum of the parts, then multiply by each part of the ratio.

Ratios are written using a colon, e.g., 3:2.

Multiply or divide all parts of the ratio by the same number to scale it up or down.

Add the parts (2+3=5), divide £60 by 5 (£12), then multiply £12 by 2 and 3 to get £24 and £36.

Write each part of the ratio as a fraction of the total, e.g., 2:3 becomes 2/5 and 3/5.

Ratios can be used to solve problems involving proportional relationships, such as scaling recipes or maps.

Convert all quantities to the same unit before simplifying the ratio.