A standard die is rolled. What is the probability of not rolling a ?
Five of the six faces are not , so .
Probability basics. Game on.
Probability basics is a grade 7 math skill aligned to Common Core standard 7.SP.C.7: develop a probability model and use it to find probabilities of events. Below are 8 practice questions with answers and step-by-step explanations, drawn from the 18 probability basics problems our math games drill.
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A bag holds red marbles and blue marbles. One marble is drawn at random. What is the probability it is red?
There are marbles in all, and are red, so .
A spinner has equal sections: red, blue, and green. What is the probability the spinner does not land on red?
Four of the five equal sections are not red, so .
A spinner has equal sections: are green and are yellow. What is the probability the spinner lands on green?
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Each letter of the word EQUATION is written on a separate card, and one card is drawn at random. What is the probability the letter is not a vowel?
EQUATION has letters, and of them () are consonants, so .
A standard six-sided die is rolled once. What is the probability of rolling a ?
Exactly one of the equally likely faces shows a , so the probability is .
One letter is chosen at random from the word GAMES. What is the probability the letter is a vowel?
GAMES has letters, and of them ( and ) are vowels, so .
A number cube is rolled once. What is the probability of rolling an even number?
Three of the six faces () are even, so .
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Tests that cover probability basics:
Reporting domains for this skill
More Grade 7 skills
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