This skill teaches how to calculate the probability of drawing a specific shape from a bag. The probability is determined by dividing the number of desired outcomes by the total number of outcomes. It also explains how to express the probability as a fraction, decimal, or percent.
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Probability of drawing a shape from a bag
Test your understanding of probability of drawing a single shape by practicing it! Work through the below exercises to use it in practice.
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What is the chance, or probability, of drawing a yellow triangle from this bag of shapes?
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Probability is the number of outcomes we want, or desired outcomes, divided by the total possible number of outcomes.
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We can see that there are 2 ways to draw a yellow triangle, and there are 8 total ways to draw a shape, so our probability is 2 over 8
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This simplifies to a probability of 1 over 4
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We can also express this as a decimal, zero point two five, or as a percent, 25 percent, if we want.