Calculations with Ratios

What are ratios?

A ratio is used to compare amounts of the same unit in a definite order. The following videos will explain how ratios work, how to simplify ratios and how to find the Greatest Common Factor (GCF) and a range of calculations with ratios in HSC Standard Math.

The following video introduces what ratios are.

How to simplify ratios

The following video calculates ratios by simplifying them with a HSC example.

How to find the Greatest Common Factor

Often it helps to solve ratios if you know how to find the greatest common factor. The following video explains how to do so.