Success TutoringWorksheets

9th Grade Probability Worksheet — Level 1 — Practice Set 3 — Answers

Answer sheet with worked solutions for the 9th Grade probability worksheet.

Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Probability

9th 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 prime number?

Answer:

  1. Favorable outcomes: 3 out of 6
2.A fair six-sided die is rolled. What is the probability of rolling a number greater than 5?

Answer:

  1. Favorable outcomes: 1 out of 6
3.A bag has 3 red, 6 blue and 6 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

  1. Total marbles: 15
  2. P(blue) = 6/15 =
4.A bag has 2 red, 6 blue and 1 green marbles. One is chosen at random. What is the probability it is red?

Answer:

  1. Total marbles: 9
  2. P(red) = 2/9 =
5.A fair six-sided die is rolled. What is the probability of rolling a multiple of 3?

Answer:

  1. Favorable outcomes: 2 out of 6
6.A bag has 6 red, 5 blue and 6 green marbles. One is chosen at random. What is the probability it is red?

Answer:

  1. Total marbles: 17
  2. P(red) = 6/17 =
7.A bag has 4 red, 6 blue and 4 green marbles. One is chosen at random. What is the probability it is red?

Answer:

  1. Total marbles: 14
  2. P(red) = 4/14 =
8.A bag has 6 red, 3 blue and 3 green marbles. One is chosen at random. What is the probability it is red?

Answer:

  1. Total marbles: 12
  2. P(red) = 6/12 =
9.A bag has 6 red, 1 blue and 2 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 9
  2. P(green) = 2/9 =
10.A bag has 3 red, 6 blue and 3 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 12
  2. P(green) = 3/12 =
Free worksheets at worksheets.successtutoring.com · © Success Tutoring · Free for personal and classroom use

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.