(Answer ID # 0219111)
Simple Probability: Calculate the probability in decimal, fraction or percent form
Show your work by showing your thinking as you go. You will probably need an extra piece of blank paper. When you are done, check your work against the answer key and correct any mistakes.
1. / A number from 13 to 22 is drawn at random.P(not a 16)
Express the probability as a fraction.
/ 2. / A number from 9 to 20 is drawn at random.
P(an odd number)
Express the probability as a decimal. Round to the nearest hundredth.
3. / A jar contains 9 orange, 7 white, and 23 navy marbles. A marble is drawn at random.
P(white or navy)
Express the probability as a percent. Round to the nearest percent.
/ 4. / You roll a number cube numbered from 1 to 6.
P(5)
Express the probability as a fraction.
5. / You roll a number cube numbered from 1 to 6.
P(a prime number)
Express the probability as a percent. Round to the nearest percent.
/ 6. / You roll a number cube numbered from 1 to 6.
P(a number divisible by 2)
Express the probability as a decimal. Round to the nearest hundredth.
7. / A jar contains 4 yellow, 25 gray, 17 pink, and 17 blue marbles. A marble is drawn at random.
P(not gray)
Express the probability as a percent. Round to the nearest percent.
/ 8. / A jar contains 8 blue and 25 purple marbles. A marble is drawn at random.
P(blue)
Express the probability as a decimal. Round to the nearest hundredth.
9. / A jar contains 23 orange, 13 black, and 24 red marbles. A marble is drawn at random.
P(not orange)
Express the probability as a fraction.
/ 10. / A number from 13 to 25 is drawn at random.
P(15, 17, or 22)
Express the probability as a decimal. Round to the nearest hundredth.
11. / You roll a number cube numbered from 1 to 6.
P(a number greater than 1)
Express the probability as a fraction.
/ 12. / You roll a number cube numbered from 1 to 6.
P(an odd number)
Express the probability as a percent. Round to the nearest percent.
13. / A number from 23 to 32 is drawn at random.
P(a prime number)
Express the probability as a decimal. Round to the nearest hundredth.
/ 14. / A jar contains 16 pink, 23 orange, and 8 yellow marbles. A marble is drawn at random.
P(orange)
Express the probability as a fraction.
Answer Key 0219111
1. / A number from 13 to 22 is drawn at random.
P(not a 16)
Express the probability as a fraction.
9
10
/ 2. / A number from 9 to 20 is drawn at random.
P(an odd number)
Express the probability as a decimal. Round to the nearest hundredth.
0.5
3. / A jar contains 9 orange, 7 white, and 23 navy marbles. A marble is drawn at random.
P(white or navy)
Express the probability as a percent. Round to the nearest percent.
77%
/ 4. / You roll a number cube numbered from 1 to 6.
P(5)
Express the probability as a fraction.
1
6
5. / You roll a number cube numbered from 1 to 6.
P(a prime number)
Express the probability as a percent. Round to the nearest percent.
50%
/ 6. / You roll a number cube numbered from 1 to 6.
P(a number divisible by 2)
Express the probability as a decimal. Round to the nearest hundredth.
0.5
7. / A jar contains 4 yellow, 25 gray, 17 pink, and 17 blue marbles. A marble is drawn at random.
P(not gray)
Express the probability as a percent. Round to the nearest percent.
60%
/ 8. / A jar contains 8 blue and 25 purple marbles. A marble is drawn at random.
P(blue)
Express the probability as a decimal. Round to the nearest hundredth.
0.24
9. / A jar contains 23 orange, 13 black, and 24 red marbles. A marble is drawn at random.
P(not orange)
Express the probability as a fraction.
37
60
/ 10. / A number from 13 to 25 is drawn at random.
P(15, 17, or 22)
Express the probability as a decimal. Round to the nearest hundredth.
0.23
11. / You roll a number cube numbered from 1 to 6.
P(a number greater than 1)
Express the probability as a fraction.
5
6
/ 12. / You roll a number cube numbered from 1 to 6.
P(an odd number)
Express the probability as a percent. Round to the nearest percent.
50%
13. / A number from 23 to 32 is drawn at random.
P(a prime number)
Express the probability as a decimal. Round to the nearest hundredth.
0.3
/ 14. / A jar contains 16 pink, 23 orange, and 8 yellow marbles. A marble is drawn at random.
P(orange)
Express the probability as a fraction.
23
47