Mathsheets
Printable math worksheets for teachers and families
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Basic Probability of a Single Event
Find each probability. Write it as a fraction in simplest form.
Example
A bag contains 2 red, 2 blue, and 5 green marbles. One marble is drawn at random. What is the probability that it is green?
5
9
Answer:
5
9
1.
A bag contains 6 red, 2 blue, and 4 green marbles. One marble is drawn at random. What is the probability that it is red?
Answer:
2.
A fair six-sided die is rolled once. What is the probability of rolling an odd number?
Answer:
3.
A stack has 12 cards: 3 red cards and 9 black cards. One card is drawn at random. What is the probability it is a red card?
Answer:
4.
A bag contains 2 red, 3 blue, and 6 green marbles. One marble is drawn at random. What is the probability that it is green?
Answer:
5.
A bag contains 2 red, 4 blue, and 5 green marbles. One marble is drawn at random. What is the probability that it is red?
Answer:
6.
A bag contains 4 red, 1 blue, and 7 green marbles. One marble is drawn at random. What is the probability that it is green?
Answer:
7.
A fair six-sided die is rolled once. What is the probability of rolling a prime number?
Answer:
8.
A fair six-sided die is rolled once. What is the probability of rolling a 1?
Answer:
9.
A fair six-sided die is rolled once. What is the probability of rolling a number less than 3?
Answer:
10.
A stack has 11 cards: 6 winning cards and 5 losing cards. One card is drawn at random. What is the probability it is a winning card?
Answer:
11.
A stack has 9 cards: 7 winning cards and 2 losing cards. One card is drawn at random. What is the probability it is a winning card?
Answer:
12.
A bag contains 4 red, 3 blue, and 1 green marbles. One marble is drawn at random. What is the probability that it is red?
Answer:
13.
A stack has 10 cards: 1 winning card and 9 losing cards. One card is drawn at random. What is the probability it is a winning card?
Answer:
14.
A stack has 11 cards: 7 heart cards and 4 diamond cards. One card is drawn at random. What is the probability it is a heart card?
Answer: