AI generatedProbabilityKey Stage 3

Writing probability as a fraction, decimal or percentage

Writing probability as a fraction, decimal or percentage.

  • Probability = favourable outcomes ÷ all outcomes when individual outcomes are equally likely.
  • A probability lies between 0 and 1; complementary probabilities sum to 1.
  • Experimental relative frequency estimates probability and can vary between samples.

Example 1

The probability of winning is . Write it as a simplified fraction, decimal and percentage.

Simplify the fraction by dividing by any common factor.Divide numerator by denominator.
PercentageMultiply the decimal by 100.

Example 2

The probability of winning is . Write it as a simplified fraction, decimal and percentage.

Simplify the fraction by dividing by any common factor.Divide numerator by denominator.
PercentageMultiply the decimal by 100.

Your turn

Question 1

The probability of winning is . Write it as a simplified fraction, decimal and percentage.

Check answer
Simplify the fraction by dividing by any common factor.Divide numerator by denominator.
PercentageMultiply the decimal by 100.
Question 2

The probability of winning is . Write it as a simplified fraction, decimal and percentage.

Check answer
Simplify the fraction by dividing by any common factor.Divide numerator by denominator.
PercentageMultiply the decimal by 100.
Question 3

The probability of winning is . Write it as a simplified fraction, decimal and percentage.

Check answer
Simplify the fraction by dividing by any common factor.Divide numerator by denominator.
PercentageMultiply the decimal by 100.
Question 4

The probability of winning is . Write it as a simplified fraction, decimal and percentage.

Check answer
Simplify the fraction by dividing by any common factor.Divide numerator by denominator.
PercentageMultiply the decimal by 100.
Question 5

The probability of winning is . Write it as a simplified fraction, decimal and percentage.

Check answer
Simplify the fraction by dividing by any common factor.Divide numerator by denominator.
PercentageMultiply the decimal by 100.
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