NAME
PROBABILITY
DATE_
PROBABILITY AS A FRACTION
Circle the fraction that describes the
probability of each outcome on the
nine-peg ring toss board.
|F-
. ....
.
probability of an event *
1. A ring lands on peg 4.
4
9
2. A ring lands on a peg numbered greater than 6.
3
3. A ring lands on a corner peg.
number of chosen outcomes
^„
number of possible outcomes
n(lmKon
4
4. A ring lands on the center peg.
5. A ring lands on a peg in the bottom row.
2
3
6. A ring lands on an even-numbered peg.
7. A ring lands on a numbered peg.
1
9
8. A ring lands on a peg numbered greater than 3.
5
9
9. A ring lands on an odd-numbered peg.
4
9
10. A ring lands on peg 10.
1
Draw a 12-peg board. Then name the fraction that describes the
possibility of each outcome. Write each fraction in simplest form.
11. A ring lands on peg 5.
12. A ring lands on a peg numbered greater than 8..
13. A ring lands on an odd-numbered peg.
14. A ring lands on peg 15.
15. A ring lands on a peg numbered from 1 to 3.
16. A ring lands on a peg not numbered 9 or 10.
17. A ring lands on peg 10 or 11.
18. A ring lands on a peg with a single-digit number.
Bonus: Imagine a board with 15 pegs. Write the fraction that describes the probability that a ring will land on a peg
with a double-digit number.
©The Mailbox" • Teacher's Helper* • TEC48053 « FebVMar. 2011