Probability Worksheets 8th Grade Printable

Probability is a key concept in math that can be challenging for many 8th-grade students. To help them grasp this topic more effectively, printable worksheets can be a useful tool. These worksheets provide structured exercises that focus on various aspects of probability. Whether you're a teacher looking for extra practice resources or a parent wanting to support your child's learning, these printable worksheets offer a convenient way to reinforce the concept of probability in a hands-on and engaging manner.

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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, as there are two possible outcomes (heads or tails) and each has an equal chance of occurring.

If there are 20 marbles in a bag, 5 of which are red, what is the probability of drawing a red marble?

The probability of drawing a red marble from the bag is 5/20, or 1/4, which is 0.25 or 25%.

A standard deck of cards has 52 cards. What is the probability of drawing a heart?

There are 13 hearts in a standard deck of 52 cards. Therefore, the probability of drawing a heart from a standard deck of cards is 13/52, which simplifies to 1/4 or 25%.

A spinner has 8 equal sections. What is the probability of landing on a red section?

The probability of landing on a red section is 1/8, as there is 1 red section out of 8 equal sections on the spinner.

A group of 30 students is surveyed, and 15 of them play a musical instrument. What is the probability that a randomly selected student plays an instrument?

The probability that a randomly selected student plays an instrument is 15/30, which simplifies to 1/2 or 50%.

Out of a jar containing 10 blue and 5 green marbles, two marbles are drawn without replacement. What is the probability of drawing two blue marbles?

The probability of drawing two blue marbles can be calculated by multiplying the probabilities of drawing a blue marble on the first draw (10/15) by the probability of drawing a blue marble on the second draw (9/14). So, the probability is (10/15) * (9/14) = 3/7 or approximately 0.4286.

A bag contains 8 green candies, 4 red candies, and 3 yellow candies. If one candy is chosen at random, what is the probability of it being green or red?

The total number of green and red candies in the bag is 8 + 4 = 12 candies. The total number of candies in the bag is 8 + 4 + 3 = 15 candies. Therefore, the probability of randomly choosing a green or red candy from the bag is 12/15, which simplifies to 4/5 or 80%.

A school has 100 students and 25 of them play basketball. If a student is chosen at random, what is the probability that they play basketball?

The probability that a randomly chosen student plays basketball is 25/100, which simplifies to 1/4 or 0.25.

A box contains 6 red balls, 4 blue balls, and 2 green balls. If two balls are drawn without replacement, what is the probability of getting a red ball and then a blue ball?

To find the probability of getting a red ball and then a blue ball when two balls are drawn without replacement, we first calculate the individual probabilities. The probability of drawing a red ball on the first draw is 6/12 (total red balls/total balls). After drawing a red ball, there are now 11 balls remaining in the box. The probability of drawing a blue ball on the second draw is 4/11 (total blue balls left/total remaining balls). Therefore, the probability of getting a red ball followed by a blue ball is (6/12) * (4/11) = 24/132 = 2/11. The probability of this sequence of events occurring is 2/11.

A survey shows that 60% of people prefer dogs, 30% prefer cats, and 10% prefer other pets. If a person is chosen at random, what is the probability that they prefer cats or other pets?

The probability that a person chosen at random prefers cats or other pets is 0.30 (30%) + 0.10 (10%) = 0.40 or 40%.