Year 7 Probability Worksheet — Level 3 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 7 probability worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · ProbabilityYear 7 Probability Worksheet — Level 3 — Practice Set 2 — Answers
Write each probability as a fraction in simplest form.
1.A bag has 3 red, 6 blue and 4 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 13
- P(blue) = 6/13 =
2.A bag has 1 red, 5 blue and 5 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 11
- P(blue) = 5/11 =
3.The probability that it rains tomorrow is . What is the probability that it does not rain?
Answer:
- P(not rain) = 1 − =
4.A fair six-sided die is rolled. What is the probability of rolling a prime number?
Answer:
- Favourable outcomes: 3 out of 6
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, 3 blue and 1 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 6
- P(red) = 2/6 =
8.The probability that it rains tomorrow is . What is the probability that it does not rain?
Answer:
- P(not rain) = 1 − =
9.The probability that it rains tomorrow is . What is the probability that it does not rain?
Answer:
- P(not rain) = 1 − =
10.A bag has 4 red, 6 blue and 1 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 11
- P(red) = 4/11 =
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