Basic Probability - Worksheet

Sep 30, 2026

Uploaded by Aldword

Basic Probability worksheet focused on calculating simple event probabilities using models such as a colored spinner, a dice roll, and a selection array of shapes. Problems ask for probabilities of landing on specific colors (black, white, gray), outcomes like “not 1,” landing on particular die numbers, and getting odd results. Additional questions use a 40.00% (8 out of 20) selection reference to identify shapes, determine the most likely shape, and count total pieces in the spinner or array.

LanguageEnglish

CategoryExam

FormatPDF

Pages30

Reading Time1 h 16 min

AccessFree to download

Questions

Spinner and color probabilities

Dice outcome probabilities

Shape array selection probabilities

Counting total pieces

Basic Probability Name: | Use each diagram to solve the problems.

1) If you spun the spinner 1 time, what is the probability it would land on a black piece?
2) If you spun the spinner 1 time, what is the probability of landing on either a black piece or a white piece?
3) If you spun the spinner 1 time, what is the probability it would land on a gray piece?
4) If you spun the spinner 1 time, what is the probability it would land on a white piece?
5) How many pieces are there total in the spinner?
6) If you were to roll the dice one time what is the probability it will NOT land on a 1?

7) If you were to roll the dice one time what is the probability it will landon a 4?
8) If you were to roll the dice one time, what is the probability of it landing on an odd number?

9) Which shape has a 40 .00% chance (8 out of 20) of being selected?
10) If you were to select 1 shape at random from the array, what shape do you have the greatest probability of selecting?
11) If you were to select 1 shape at random from the array, what is the probability it will be a diamond?
12) How many shapes are there total in the array? | 1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12. | Answers | | --- | --- | --- | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Math [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 1 1-10 92 11-12 8 83 0 75 67 58 50 42 33 25 17 Basic Probability Name: Answer Key | Use each diagram to solve the problems.

1) If you spun the spinner 1 time, what is the probability it would land on a black piece?
2) If you spun the spinner 1 time, what is the probability of landing on either a black piece or a white piece?
3) If you spun the spinner 1 time, what is the probability it would land on a gray piece?
4) If you spun the spinner 1 time, what is the probability it would land on a white piece?
5) How many pieces are there total in the spinner?
6) If you were to roll the dice one time what is the probability it will NOT land on a 1?

7) If you were to roll the dice one time what is the probability it will landon a 4?
8) If you were to roll the dice one time, what is the probability of it landing on an odd number?

9) Which shape has a 40 .00% chance (8 out of 20) of being selected?
10) If you were to select 1 shape at random from the array, what shape do you have the greatest probability of selecting?
11) If you were to select 1 shape at random from the array, what is the probability it will be a diamond?
12) How many shapes are there total in the array? | Answers 1. 4 out of 9 2. 7 out of 9 3. 2 out of 9 4. 3 out of 9 5. 9 6. 5 out of 6 7. 1 out of 6 8. 3 out of 6 [9. ](9. star)[ star](9. star) [10. ](10. circle)[ circle](10. circle)
[11](11). 11 out of 20 12. 20 | | --- | --- | Math [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 1 1-10 92 11-12 8 83 0 75 67 58 50 42 33 25 17 Basic Probability Name: | Use each diagram to solve the problems. | | Answers
1.
2.
3.
4.
5.
6.
7.
8. | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 7 out of 9
3 out of 9
3 out of 6
5 out of 6
9
4 out of 9
2 out of 9
1 out of 6 | | | | | | | | | | |
1) If you spun the spinner 1 time, what is the probability it would land on a black piece?

2) If you spun the spinner 1 time, what is the probability of landing on either a black piece or a white piece?

3) If you spun the spinner 1 time, what is the probability it would land on a gray piece?

4) If you spun the spinner 1 time, what is the probability it would land on a white piece?

5) How many pieces are there total in the spinner? | | | | | | | | | | | 1-8 | 88 | | 75 | 63 | 50 | 38 | 25

FAQs

How do you find the probability of landing on a black, white, or gray piece on the spinner?

Use the number of pieces of each color divided by the total number of spinner pieces, based on the diagram.

What probability questions are asked for dice rolls?

They include the probability of landing on a specific number (such as 3 or 4), the probability of not landing on 1, and the probability of landing on an odd number.

How are shape selection probabilities determined from the array?

Compute probability as the number of matching shapes in the array divided by the total number of shapes, including using the given 40.00% (8 out of 20) reference to identify the shape.

Sep 30, 2026

Uploaded by Aldword