Average (P5) Practice
Calculate averages, find the total from a given average, and identify missing values. Includes finding the average of sets with a changing number of items — a classic exam problem type.
Common Mistakes to Avoid
Dividing by the wrong number of items
Confusing 'find the total' with 'find the average'
Adding or removing items without adjusting the count
Practice Questions
Try each question. When you're stuck, reveal the Socratic strategy — a guided hint that teaches you how to think, not just what to write.
The average score of 5 students is 72. What is the total score of all 5 students?
The average of four numbers is 15. When a fifth number is added, the average becomes 18. What is the fifth number?
Ali scored 68, 74, 80, and 58 in four tests. What score must he get in the fifth test to achieve an average of 72?
Parent & Tutor Insight
Average problems are often paired with whole-number or ratio topics in P5 exams. If your child understands that Average × Count = Total, they can reverse-engineer any average problem.
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