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8th Grade Probability Worksheet — Level 3 — Practice Set 4 — Answers

Answer sheet with worked solutions for the 8th Grade probability worksheet.

Success TutoringWorksheetsAnswer sheet8th Grade · Mathematics · Probability

8th Grade Probability Worksheet — Level 3 — Practice Set 4 — Answers

Write each probability as a fraction in simplest form.

1.A bag has 2 red, 3 blue and 6 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

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

Answer:

  1. Favorable outcomes: 4 out of 6
3.A fair six-sided die is rolled. What is the probability of rolling an even number?

Answer:

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

Answer:

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

Answer:

  1. Total marbles: 12
  2. P(green) = 4/12 =
6.The probability that it rains tomorrow is . What is the probability that it does not rain?

Answer:

  1. P(not rain) = 1 − =
7.A bag has 4 red, 2 blue and 5 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

  1. Total marbles: 11
  2. P(blue) = 2/11 =
8.A bag has 6 red, 2 blue and 6 green marbles. One is chosen at random. What is the probability it is green?

Answer:

  1. Total marbles: 14
  2. P(green) = 6/14 =
9.The probability that it rains tomorrow is . What is the probability that it does not rain?

Answer:

  1. P(not rain) = 1 − =
10.A fair six-sided die is rolled. What is the probability of rolling a number greater than 4?

Answer:

  1. Favorable outcomes: 2 out of 6
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