1. Probability! 3rd grade Review Created by J. Hicks – ITRT
(Questions taken from Study Island)

2. 1. If the four spinners below are spun 100 times each, which spinner will most likely land on the number 1 the least times?
Spinner Z
Spinner Y
Spinner W
Spinner X

3. 2. The following chips are placed in a bucket: 2 red, 1 yellow, 2 blue, and 6 green. One chip is randomly selected from the bucket. What color chip has the best chance of being selected?
Blue
Yellow
Green
Red

4. 3. A class of 27 students is having a drawing
3. A class of 27 students is having a drawing. Each student’s name is put on a piece of paper then placed in a hat. One name is randomly drawn from the hat. If there are 14 boys in the class, is the randomly selected name more likely to be a boy’s or girl’s?
Girl’s name
It is equally likely to be a boy’s or girl’s name
Boy’s name

5. 4. James chose a random number between 1 and 10
4. James chose a random number between 1 and 10. What is the probability that the number he chose is 3, 6, or 9?
2 out of 10
1 out of 2
3 out of 10
1 out of 3

6. 5. The letters T, E, S, T are placed in a bag
5. The letters T, E, S, T are placed in a bag. One letter is randomly selected from the bag. Which letter is most likely to be selected? E S T
All of the letters are equally likely to be selected

7. 6. Pablo has 3 blue buttons, 6 red buttons, and 2 yellow buttons in his pocket. All of the buttons are the same size. Pablo takes out 1 button. Which statement is correct?
He’s more likely to take out a yellow button than a red button
He’s less likely to take out a yellow button than a red button
He’s more likely to take out a blue button than a red button
He’s less likely to take out a red button than a blue button

8. 7. Lisa chose a random number between 1 and 10
7. Lisa chose a random number between 1 and 10. What is the probability that the number she chose is an even number (2,4,6,8, or 10)?
5 out of 10
1 out of 5
2 out of 10
5 out of 9

9. Each ball is equally likely to be selected
8. Eight balls are placed in a bucket. The balls are numbered 1 to 8. One ball is randomly selected from the bucket. Which ball is more likely to be selected, ball #1, ball #3, or ball #6?
Ball #1
Ball #6
Each ball is equally likely to be selected
Ball #3

10. 9. If the spinner below is spun 100 times, which letter will the spinner land on the least times?X Z Y W

11. 10. If the four spinners below are spun 100 times each, which spinner will most likely land on the number 3 the most times? X W Z Y

12. Great Job!