8th Grade Probability Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 8th Grade probability worksheet.
8th Grade Probability Worksheet — Level 1 — Practice Set 3 — Answers
Write each probability as a fraction in simplest form.
1.A fair six-sided die is rolled. What is the probability of rolling a number greater than 2?
Answer:
- Favorable outcomes: 4 out of 6
2.A bag has 4 red, 3 blue and 2 green marbles. One is chosen at random. What is the probability it is green?
Answer:
- Total marbles: 9
- P(green) = 2/9 =
3.A bag has 6 red, 1 blue and 5 green marbles. One is chosen at random. What is the probability it is green?
Answer:
- Total marbles: 12
- P(green) = 5/12 =
4.A bag has 4 red, 5 blue and 2 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 11
- P(blue) = 5/11 =
5.A bag has 1 red, 2 blue and 1 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 4
- P(red) = 1/4 =
6.A fair six-sided die is rolled. What is the probability of rolling a multiple of 3?
Answer:
- Favorable outcomes: 2 out of 6
7.A fair six-sided die is rolled. What is the probability of rolling a prime number?
Answer:
- Favorable outcomes: 3 out of 6
8.A bag has 1 red, 3 blue and 3 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 7
- P(red) = 1/7 =
9.A bag has 1 red, 2 blue and 1 green marbles. One is chosen at random. What is the probability it is green?
Answer:
- Total marbles: 4
- P(green) = 1/4 =
10.A bag has 2 red, 1 blue and 1 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 4
- P(red) = 2/4 =
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.
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