Connect the ideas
Match units before simplifying a ratio or comparing rates.
A ratio scales by multiplying every term by the same factor.
A unit rate describes the amount per one unit.
Use total distance divided by total time for average speed.
Direct proportion has the form and passes through the origin.
Check assumptions and round an answer to suit the actual situation.
Topic test
Complete each paper and show your working.
Ratios and rates — topic test
15 questions · 40 marks · 45 minutes · By hand