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9th Grade Probability Worksheet — Level 1 — Answers

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

Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Probability

9th Grade Probability Worksheet — Level 1 — Answers

Write each probability as a fraction in simplest form.

1.A bag has 6 red, 6 blue and 6 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 18
  2. P(green) = 6/18 =
2.A bag has 5 red, 1 blue and 5 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 11
  2. P(green) = 5/11 =
3.A fair six-sided die is rolled. What is the probability of rolling a number greater than 3?

Answer:

  1. Favorable outcomes: 3 out of 6
4.A bag has 4 red, 5 blue and 5 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 14
  2. P(green) = 5/14 =
5.A fair six-sided die is rolled. What is the probability of rolling a prime number?

Answer:

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

Answer:

  1. Favorable outcomes: 5 out of 6
7.A bag has 1 red, 4 blue and 4 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 9
  2. P(green) = 4/9 =
8.A bag has 1 red, 3 blue and 4 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 8
  2. P(green) = 4/8 =
9.A bag has 2 red, 3 blue and 5 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

  1. Total marbles: 10
  2. P(blue) = 3/10 =
10.A bag has 1 red, 6 blue and 4 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

  1. Total marbles: 11
  2. P(blue) = 6/11 =
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