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 practice length, write down your working, then reveal answers only when you are ready to check. Hints give a starting point without giving away the answer.
Practice set
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 . 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 . Write this as a percentage.
10. The probability of a train being late is . Write this as a percentage.
Practice answers
Check your work when you are ready.