Maths
Stretch – Simple Probability
Stretch (independent-school 11+): describe probability in words and as a fraction from 0 to 1, for equally likely outcomes.
MathsAge 11+25 minutes
What this topic covers
- Use the probability scale from 0 (impossible) to 1 (certain), including even chance.
- Find the probability of an event as favourable outcomes ÷ total equally likely outcomes.
- Find the probability an event does not happen, and compare probabilities.
Core concept summaries
Key ConceptsThe Probability ScaleEqually Likely OutcomesNot Happening; the Independence Trap
Practice formats pupils may meet
NeurofiED uses varied practice to help pupils apply the idea actively, check understanding and build confidence over time.
clozematchingquiz
Example quiz question
What is the probability of an impossible event?
- 0
- ½
- 10
- 1
Show the answer
Answer: A. 0
Zero.