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Introduction to Probability and Probability Scale — Free MYP1 Mathematics Practice Questions
1QuestionDescribing Events as Likely or UnlikelyConcept Practice
2 marks~3 minCriterion A
A spinner is divided into 4 equal sections: red, blue, yellow, and green.
a
Identify one colour that is not on the spinner. [1]
b
State whether landing on that colour is likely, unlikely, or impossible. Give one reason for your answer. [1]
Solutions
2QuestionDescribing Events as Likely or UnlikelyConcept Practice
2 marks~3 minCriterion D
A weather app shows: "There is a chance of rain tomorrow."
a
State whether rain is likely or unlikely based on this forecast. [1]
b
Describe one reason why this forecast may not help you decide whether to go on a picnic. [1]
Solutions
3QuestionDescribing Events as Likely or UnlikelyConcept Practice
2 marks~3 minCriterion B
A spinner has 6 equal sections: 3 red, 2 blue, and 1 green. It was spun 20 times.
| Colour | Red | Blue | Green |
|---|---|---|---|
| Frequency | 11 | 6 | 3 |
a
Identify which colour landed most often. [1]
b
Describe the pattern between the number of sections for each colour and how often it landed. [1]
Solutions
4QuestionDescribing Events as Likely or UnlikelyConcept Practice
5 marks~8 minCriterion C
A bag contains 3 red, 2 blue, and 5 green marbles. One marble is picked without looking.
a
State the total number of marbles in the bag. [1]
b
Calculate the probability of picking a blue marble. [2]
c
A student says: "It is unlikely to pick a blue marble because there are only 2 blue marbles." Describe whether the student's claim is correct, and explain what the student should have considered. [2]
Solutions
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