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Secondary 1Maths revision

Basic Probability

Build confidence with basic probability through short revision prompts and exam-style checks.

Focus points
Review the core ideas in basic probability.
Solve routine questions with clear working and good notation.
Apply the topic in short exam-style questions.
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Question lineup

Mark each one done as you go — finish them all to claim your chips.

100 revision prompts
Question 1OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Solve carefully: A fair spinner has 8 equal sectors numbered 1 to 8. Find the probability of landing on an even number.
Question 2OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Show full working for: A bag contains 6 green balls and 4 yellow balls. Find the probability of drawing a yellow ball at random.
Question 3OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Answer this exam-style prompt: A fair spinner has 8 equal sectors numbered 1 to 8. Find the probability of landing on an even number.
Question 4OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write down the key method, then solve: A bag contains 6 green balls and 4 yellow balls. Find the probability of drawing a yellow ball at random.
Question 5OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Work this out and simplify your final answer: A fair spinner has 8 equal sectors numbered 1 to 8. Find the probability of landing on an even number.
Question 6OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Set out your steps clearly for: A bag contains 6 green balls and 4 yellow balls. Find the probability of drawing a yellow ball at random.
Question 7OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Find the answer and state your method for: A fair spinner has 8 equal sectors numbered 1 to 8. Find the probability of landing on an even number.
Question 8OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Complete this revision check: A bag contains 6 green balls and 4 yellow balls. Find the probability of drawing a yellow ball at random.
Question 9OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Solve and check your result for: A fair spinner has 8 equal sectors numbered 1 to 8. Find the probability of landing on an even number.
Question 10OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Use accurate notation to answer: A bag contains 6 green balls and 4 yellow balls. Find the probability of drawing a yellow ball at random.
Question 11OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Solve carefully: A fair spinner has 8 equal sectors numbered 1 to 8. Find the probability of landing on an even number.
Question 12OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Show full working for: A bag contains 6 green balls and 4 yellow balls. Find the probability of drawing a yellow ball at random.
Question 13OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Answer this exam-style prompt: A fair spinner has 8 equal sectors numbered 1 to 8. Find the probability of landing on an even number.
Question 14OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write down the key method, then solve: A bag contains 6 green balls and 4 yellow balls. Find the probability of drawing a yellow ball at random.
Question 15OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Work this out and simplify your final answer: A fair spinner has 8 equal sectors numbered 1 to 8. Find the probability of landing on an even number.
Question 16OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Set out your steps clearly for: A bag contains 6 green balls and 4 yellow balls. Find the probability of drawing a yellow ball at random.
Question 17OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 18OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 19OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 20OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 21OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 22OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 23OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 24OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 25OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 26OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 27OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 28OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 29OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 30OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 31OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 32OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 33OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 34OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 35OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 36OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 37OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 38OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 39OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 40OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 41OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 42OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 43OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 44OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 45OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 46OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 47OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 48OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 49OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 50OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 51OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 52OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 53OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 54OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 55OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 56OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 57OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 58OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 59OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 60OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 61OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 62OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 63OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 64OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 65OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 66OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 67OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 68OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 69OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 70OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 71OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 72OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 73OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 74OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 75OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 76OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Create a similar basic probability question of your own and solve it fully.
Question 77OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 78OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Write one easier and one harder basic probability question, then solve both.
Question 79OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Describe a common mistake students make in basic probability and correct it with an example.
Question 80OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice)
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 81OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Create a similar basic probability question of your own and solve it fully.
Question 82OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 83OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Write one easier and one harder basic probability question, then solve both.
Question 84OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Describe a common mistake students make in basic probability and correct it with an example.
Question 85OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 86OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Create a similar basic probability question of your own and solve it fully.
Question 87OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 88OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Write one easier and one harder basic probability question, then solve both.
Question 89OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Describe a common mistake students make in basic probability and correct it with an example.
Question 90OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 91OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Create a similar basic probability question of your own and solve it fully.
Question 92OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 93OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Write one easier and one harder basic probability question, then solve both.
Question 94OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Describe a common mistake students make in basic probability and correct it with an example.
Question 95OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Turn one of today’s basic probability questions into a short word problem and solve it.
Question 96OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Create a similar basic probability question of your own and solve it fully.
Question 97OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Explain which rule or property is most important in basic probability and illustrate it with a worked example.
Question 98OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Write one easier and one harder basic probability question, then solve both.
Question 99OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Describe a common mistake students make in basic probability and correct it with an example.
Question 100OpenStax Introductory Statistics 2e / CK-12 FlexMath (paraphrased practice) / Free Online Revision extended practice
Turn one of today’s basic probability questions into a short word problem and solve it.