Checking and securing exhaustive events
I can work with probabilities as fractions, decimals and percentages and use the fact that exhaustive events sum to 1.
Checking and securing exhaustive events
I can work with probabilities as fractions, decimals and percentages and use the fact that exhaustive events sum to 1.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Probabilities can be given as fractions, decimals or percentages
- An event is exhaustive if all possible outcomes are included
- The probability of an exhaustive event is 1 and this can be used to calculate missing probabilities
Keywords
Mutually exclusive - Two or more events are mutually exclusive if they share no common outcome.
Exhaustive events - A set of events are exhaustive if at least one of them has to occur whenever the experiment is carried out.
Common misconception
Pupils may think that any set of probabilities relating to a scenario will always sum to 1.
Probabilities sum to 1 when the events are exhaustive and mutually exclusive.
To help you plan your year 11 maths lesson on: Checking and securing exhaustive events, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 11 maths lesson on: Checking and securing exhaustive events, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 4 maths lessons from the Conditional probability unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions
P(greater than 20) -
impossible
P(square) -
unlikely
P(odd) -
even chance
P(single digit) -
likely



Exit quiz
6 Questions




