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A fast, self-marking GCSE Probability recall drill: five quick rounds covering the probability scale, single-event probability, the sum-to-1 rule, experimental and expected frequency, and the AND/OR rules. Print or play.
- Access
- Locked — access required
- Assessment
- Not included
- Format
- Activity Book
- Subject
- Mathematics
- Level
- Key stage 4
- Typical time
- 10 minutes
- Length
- 5 pages
Inside GCSE Maths: Probability — Quick Burst Practice
read the 0–1 scale, fire out single-event probabilities, use ‘total = 1’, work out relative frequency and expected frequency, and apply the AND (×) and OR (+) rules. Fifteen quick questions. About 10 minutes.
Learning objectives
- reading the 0–1 probability scale and finding the theoretical probability of single events;
- using the ‘probabilities sum to 1’ rule, i.e. P(not) = 1 − P(happening);
- calculating experimental probability / relative frequency and expected frequency = probability × number of trials;
- applying the AND (×) rule for independent events and the OR (+) rule for mutually exclusive events.
Activities in this book
Round 1 — Probability Scale
every probability lives between 0 (impossible) and 1 (certain). Anything below 0 or above 1 is not a probability at all.
Round 2 — Single-Event Probability
theoretical probability = number of ways an event can happen ÷ total number of equally likely outcomes. Simplify fractions where the question asks.
Round 3 — Sum to 1
the probabilities of all the possible outcomes always add up to 1, so P(not happening) = 1 − P(happening).
Round 4 — Experimental & Expected
relative (experimental) frequency = successes ÷ total trials. Expected frequency = probability × number of trials.
Round 5 — AND / OR Rules
for independent events use the AND rule and multiply; for mutually exclusive events use the OR rule and add.
Suggestions for teaching
- Keep it fast. This is a recall drill — aim for a correct answer within a few seconds, not a full written method.
- Fix the form. Read whether each question wants a fraction in lowest terms or a decimal before answering.
- Little and often. Re-run the five rounds regularly to build automatic, exam-ready recall.
What you’ll learn
Use this Activity Book to practise and consolidate Mathematics knowledge and skills at Key stage 4. Return to it as often as your access allows to build confidence and fluency.
Resource preview
A fast, self-marking GCSE Probability recall drill: five quick rounds covering the probability scale, single-event probability, the sum-to-1 rule, experimental and expected frequency, and the AND/OR rules. Print or play.
This preview uses the public resource summary only. The activity and any files remain protected until access is granted.
