Year 5 Probability Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 5 probability worksheet.
Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · ProbabilityYear 5 Probability Worksheet — Level 1 — Practice Set 4 — Answers
Write each probability as a fraction in simplest form.
1.A bag has 1 red, 3 blue and 4 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 8
- P(red) = 1/8 =
2.A fair six-sided die is rolled. What is the probability of rolling a multiple of 3?
Answer:
- Favourable outcomes: 2 out of 6
3.A bag has 2 red, 2 blue and 5 green marbles. One is chosen at random. What is the probability it is green?
Answer:
- Total marbles: 9
- P(green) = 5/9 =
4.A bag has 1 red, 5 blue and 3 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 9
- P(red) = 1/9 =
5.A bag has 1 red, 5 blue and 5 green marbles. One is chosen at random. What is the probability it is red?
Answer:
- Total marbles: 11
- P(red) = 1/11 =
6.A bag has 5 red, 5 blue and 5 green marbles. One is chosen at random. What is the probability it is green?
Answer:
- Total marbles: 15
- P(green) = 5/15 =
7.A bag has 6 red, 4 blue and 6 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 16
- P(blue) = 4/16 =
8.A bag has 4 red, 5 blue and 6 green marbles. One is chosen at random. What is the probability it is blue?
Answer:
- Total marbles: 15
- P(blue) = 5/15 =
9.A fair six-sided die is rolled. What is the probability of rolling a prime number?
Answer:
- Favourable outcomes: 3 out of 6
10.A bag has 3 red, 4 blue and 1 green marbles. One is chosen at random. What is the probability it is green?
Answer:
- Total marbles: 8
- P(green) = 1/8 =
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.
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