9th Grade Probability Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the 9th Grade probability worksheet.
Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Probability9th Grade Probability Worksheet — Level 2 — 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 prime number?
Answer:
- Favorable outcomes: 3 out of 6
2.A bag has 5 red, 6 blue and 4 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 15
- P(red) = 5/15 =
3.A bag has 2 red, 5 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 2 red, 4 blue and 6 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 12
- P(blue) = 4/12 =
5.The probability that it rains tomorrow is . What is the probability that it does not rain?
Answer:
- P(not rain) = 1 − =
6.The probability that it rains tomorrow is . What is the probability that it does not rain?
Answer:
- P(not rain) = 1 − =
7.A bag has 2 red, 6 blue and 6 green marbles. One is chosen at random. What is the probability it is green?
Answer:
- Total marbles: 14
- P(green) = 6/14 =
8.A fair six-sided die is rolled. What is the probability of rolling an even number?
Answer:
- Favorable outcomes: 3 out of 6
9.A bag has 4 red, 6 blue and 3 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 13
- P(red) = 4/13 =
10.A bag has 2 red, 6 blue and 5 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 13
- P(red) = 2/13 =
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.
Great work. Here's what to try next: