8th Grade Math Probability Worksheets
8th Grade is a crucial time in a student's math education, where probability concepts are introduced. To enhance their understanding and reinforce their learning, worksheets are a valuable resource. These worksheets focus on probability, ensuring that students grasp the concepts thoroughly and apply them effectively.
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What is the probability of flipping a fair coin and getting heads?
The probability of flipping a fair coin and getting heads is 0.5 or 50%, assuming the coin is unbiased and there are only two possible outcomes (heads or tails), with each outcome having an equal chance of occurring.
If you roll a standard six-sided die, what is the probability of rolling a number less than 4?
The probability of rolling a number less than 4 on a standard six-sided die is 3/6 or 1/2, because there are three outcomes (1, 2, 3) that meet the condition out of a total of six possible outcomes.
A bag contains 12 red marbles, 8 blue marbles, and 5 green marbles. If you randomly select one marble, what is the probability of getting a blue marble?
The probability of selecting a blue marble from the bag is 8/25 or 32%.
If you draw one card from a standard deck of 52 cards, what is the probability of drawing a face card (jack, queen, or king)?
There are a total of 12 face cards in a standard deck (4 jacks, 4 queens, and 4 kings). Thus, the probability of drawing a face card from a standard deck of 52 cards is 12/52, which simplifies to 3/13 or approximately 0.231 or 23.1%.
If you randomly select a letter from the word "MATHEMATICS", what is the probability of selecting a vowel?
There are 4 vowels in the word "MATHEMATICS" out of a total of 11 letters. Therefore, the probability of randomly selecting a vowel from the word is 4/11 or approximately 0.3636, which is about 36.36%.
A box contains 40 balls, 10 of which are red and the rest are blue. If you randomly select two balls without replacement, what is the probability of selecting two blue balls?
The probability of selecting two blue balls can be calculated by first finding the probability of selecting the first blue ball (30/40) and then the probability of selecting the second blue ball given that the first one was blue (29/39). Multiplying these probabilities together, we get (30/40) * (29/39) which equals 29/52, approximately 0.5577, so the probability of selecting two blue balls is approximately 55.77%.
What is the probability of rolling a sum of 7 with two fair six-sided dice?
The probability of rolling a sum of 7 with two fair six-sided dice is 1/6, as there are a total of 6 possible ways to roll a sum of 7 out of the 36 possible outcomes when rolling two dice.
A jar contains 25 jelly beans, 10 of which are green and the rest are red. If you randomly select one jelly bean and then another one without replacement, what is the probability of selecting a green jelly bean on the second draw?
The probability of selecting a green jelly bean on the second draw from the jar, given that one green jelly bean was already drawn, would be 9/24 or 3/8, as there are now only 24 jelly beans left in the jar, with 9 green jelly beans remaining.
A spinner is divided into four equal sections labeled A, B, C, and D. What is the probability of spinning an A?
The probability of spinning an A on the spinner is 1 out of 4, or 1/4. Since there are four equal sections, each section has an equal chance of being selected when spinning the spinner, making the probability of landing on section A 1/4.
A bag contains 5 red marbles and 3 blue marbles. If you randomly select two marbles with replacement, what is the probability of selecting a red marble on the first draw and a blue marble on the second draw?
The probability of selecting a red marble on the first draw is 5/8, as there are 5 red marbles out of a total of 8 marbles in the bag. Since the marbles are replaced after each draw, the probability of selecting a blue marble on the second draw is 3/8. Therefore, the probability of selecting a red marble on the first draw and a blue marble on the second draw is (5/8) * (3/8) = 15/64 or approximately 0.2344.
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