7th Grade Math : Probability

研究概念,例子问题&解释for 7th Grade Math

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Example Questions

Example Question #1 :Probability

Kelly spun a spinner, which is pictured below,times. She recorded her results in the table provided. What is the theoretical probability of the spinner landing on the orange section?


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Possible Answers:

Correct answer:

Explanation:

The theoretical probability is what should happen. In this case, we havespaces andof those spaces is orange; thus, the theoretical probability of the spinner landing on orange should always beor

Example Question #1 :Probability

Charlie is going to roll a die and flip a coin. What is the probability that he will roll aand the coin will land with heads facing up?

Possible Answers:

Correct answer:

Explanation:

To help us solve this problem, we can make a tree diagram to show all of the possible outcomes of rolling a die and flipping a coin:

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As shown from the diagram, we havepossible outcomes, but there is only one way to roll aand for the coin to land on heads; thus, the probability is

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