Probability - 7th Grade Math
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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?
Kelly spun a spinner, which is pictured below,
The theoretical probability is what should happen. In this case, we have 
spaces and 
of those spaces is orange; thus, the theoretical probability of the spinner landing on orange should always be 
or 
The theoretical probability is what should happen. In this case, we have
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Charlie is going to roll a die and flip a coin. What is the probability that he will roll a 
and the coin will land with heads facing up?
Charlie is going to roll a die and flip a coin. What is the probability that he will roll a
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:
As shown from the diagram, we have 
possible outcomes, but there is only one way to roll a 
and for the coin to land on heads; thus, the probability is 
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:
As shown from the diagram, we have
Compare your answer with the correct one above