Percent and fractions: Probability

Probability calculates the chance of something happening in the future and is measured in per cent (%). It is regularly used to predict the weather. For example, 'I predict that there is a 50% chance of rain tomorrow'.

Quick tips for tutors

Probability includes:

  • Recognising the different ways of putting a number to chance events
  • Calculating probabilities of events
  • Ordering events by probability
  • Practising putting a number to chance events
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Downloadable Factsheets

Entry 1 & 2 - What is probability?

An introduction to probability

Entry 1 & 2 - What is probability?

Entry 1 & 2 - Probability words

An introduction to probability words.

Entry 1 & 2 - Probability words

Entry 3 - How certain?

How mathematics can give a probability or likelihood answer to events that are not certain in a mathematical way

Entry 3 - How certain?

Level 1 - Fractions, decimals and percentages

How to write probabilities using fractions, decimals and percentages, and how to convert from one to another

Level 1 - Fractions, decimals and percentages

Level 1 - The probability scale

How to add likely and unlikely events to a probability scale

Level 1 - The probability scale

Level 1 - What is probability?

Explains what probability means, and looks at how the probability scale works

Level 1 - What is probability?

Level 1 - Working out the probability: rolling a dice

How to work out the probability of getting a number at the roll of a dice

Level 1 - Working out the probability: rolling a dice

Downloadable Worksheets

Entry 1 & 2 - Probability statements

Match the correct probability statement to the matching image.

Entry 1 & 2 - Probability statements

Entry 3 - Ordering chances

The ordering chances task helps you to decide the probability of events happening and place them onto a probability scale

Entry 3 - Ordering chances

Entry 3 - Putting a number to chance

The putting a number to chance task looks at the best ways to work out the probability of a particular event.

Entry 3 - Putting a number to chance

Level 1 - Investigate weather forecasts

The investigate weather forecasts experiment looks at how to work out the probability of the weather forecast being right.

Level 1 - Investigate weather forecasts

Level 1 - Pack of cards

Questions to test your ability to work out the probability of picking specific cards from a pack of playing cards.

Level 1 - Pack of cards

Level 1 - Probability scale

A probability scale task for you to decide where specific events should be placed on the probability scale.

Level 1 - Probability scale

Level 1 - Investigate flipping a coin

The investigate flipping a coin experiment looks at what will happen if you toss a coin many times - will you get heads half the time, and tails half the time?

Level 1 - Investigate flipping a coin
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