Practice
Probability practice
Practise probability at your own pace. Choose a difficulty, try each question on paper or in your jotter, use hints only when you need a start, then show answers to check your work.
Build your confidence
Choose a difficulty and number of questions, write down your working, then reveal answers only when you are ready to check. Hints give a starting point without giving away the answer.
10 practice questions
Current set: Mixed. Show your method for each question before checking answers.
1. Use the spinner table. What is the probability of landing on blue?
Fair spinner
Red 1 Blue 4 Yellow 4 Total sections 9 2. A chance is marked at 0.5 on a probability scale. Which word best describes it?
Probability scale
0 impossible0.5 even chance1 certain0.5
3. A bag has 4 red counters and 3 blue counters. What is the probability of picking a red counter?
4. An event has probability 34. How many times would you expect it in 28 trials?
5. In 33 trials, an event happened 19 times. Find the experimental probability of the event.
6. A spinner has 10 equal sections and all 10 sections are shaded. How likely is it to land on a shaded section?
Certain event spinner
Shaded 10 Total sections 10 7. A fair six-sided dice is rolled. What is the probability of rolling more than 4?
8. There are 5 winning tickets in a set of 9. What is the probability of not picking a winning ticket?
9. The probability of a train being late is 810. Write this as a percentage.
10. The probability of a train being late is 1820. Write this as a percentage.
Practice answers
Check your work when you are ready.