Spinner Probability
About this exercise
Probabilities on a spinner.
Example problems
A few of the problems this exercise asks. The printable worksheet holds ten fresh ones.
- What is the probability that the spinner lands on green?
- What is the probability that the spinner lands on blue?
- What is the probability that the spinner lands on yellow?
- What is the probability that the spinner lands on red?
Try it yourself first — open a section below only if you get stuck.
How to solve it
If the sections are equal, count the favorable ones over the total. If they differ in size, use the angles instead.
Worked example
Two winning sections out of eight equal ones gives a quarter.
Common mistake
Counting unequal sections as if they were equal. A section covering half the circle is as likely as all the others put together.