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Year 5 Probability Worksheet — Level 3 — Answers

Answer sheet with worked solutions for the Year 5 probability worksheet.

Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · Probability

Year 5 Probability Worksheet — Level 3 — Answers

Write each probability as a fraction in simplest form.

1.A bag has 4 red, 2 blue and 4 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

  1. Total marbles: 10
  2. P(blue) = 2/10 =
2.The probability that it rains tomorrow is . What is the probability that it does not rain?

Answer:

  1. P(not rain) = 1 − =
3.The probability that it rains tomorrow is . What is the probability that it does not rain?

Answer:

  1. P(not rain) = 1 − =
4.A fair six-sided die is rolled. What is the probability of rolling a multiple of 3?

Answer:

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

Answer:

  1. Total marbles: 6
  2. P(blue) = 2/6 =
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 2 green marbles. One is chosen at random. What is the probability it is blue?

Answer:

  1. Total marbles: 8
  2. P(blue) = 2/8 =
8.The probability that it rains tomorrow is . What is the probability that it does not rain?

Answer:

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

Answer:

  1. Total marbles: 11
  2. P(red) = 2/11 =
10.The probability that it rains tomorrow is . What is the probability that it does not rain?

Answer:

  1. P(not rain) = 1 − =
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