Name
Date
TEKS 7.13.A
LESSON
Class
Problem Solving
11-4 Theoretical Probability
Write the correct answer in simplest form.
The table lists the pieces used in the
game of chess.
Chess Set
Type
1. If you randomly choose a piece of
the chess set, what is the probability
that it is a pawn? Write your answer
as a decimal.
2. If you randomly choose a piece of the
chess set, what is the probability that
it is a white pawn? Write your answer
as a decimal.
3. If you randomly choose a piece of
the chess set, what is the probability
that it is a rook, knight, or bishop?
Write your answer as a fraction.
White
Black
Pawn
8
8
Rook
2
2
Knight
2
2
Bishop
2
2
Queen
1
1
King
1
1
4. If you randomly choose a piece of
the chess set, what is the probability
that it is a queen? Write your answer
as a fraction.
Choose the letter for the best answer.
6. Eight students will give reports on
novels, 9 will report on biographies,
and 7 will report on history books.
What is the probability that the first
report will be a novel?
5. Mr. Rose draws names to see who
will give the first book report. There
are 10 boys and 14 girls in his class.
What is the probability that he will
draw a girl’s name?
2
A 5
7
C 1
2
3
F 8
8
H 17
5
B 1
2
5
D 7
1
G 3
1
J 2
7. Stanley is reading a 224-page book.
There are illustrations on 14 pages.
If Stanley opens the book at random,
what is the probability that the page
will have an illustration?
A 0.0004
C 0.0714
D 0.9375
B 0.0625
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
8. In Congress, each of the 50 states is
represented by 2 senators. If you
choose a senator randomly, what is
the probability that you will choose a
senator that represents Virginia?
F 25%
H 2%
G 10%
J 1%
95
Holt Mathematics
Name
Date
TEKS 7.13.A
LESSON
Class
Problem Solving
11-4 Theoretical Probability
Write the correct answer in simplest form.
The table lists the pieces used in the
game of chess.
Chess Set
Type
1. If you randomly choose a piece of
the chess set, what is the probability
that it is a pawn? Write your answer
as a decimal.
0.5
2. If you randomly choose a piece of the
chess set, what is the probability that
it is a white pawn? Write your answer
as a decimal.
White
Black
Pawn
8
8
Rook
2
2
Knight
2
2
Bishop
2
2
Queen
1
1
King
1
1
0.25
3. If you randomly choose a piece of
the chess set, what is the probability
that it is a rook, knight, or bishop?
Write your answer as a fraction.
4. If you randomly choose a piece of
the chess set, what is the probability
that it is a queen? Write your answer
as a fraction.
1
16
3
8
Choose the letter for the best answer.
6. Eight students will give reports on
novels, 9 will report on biographies,
and 7 will report on history books.
What is the probability that the first
report will be a novel?
5. Mr. Rose draws names to see who
will give the first book report. There
are 10 boys and 14 girls in his class.
What is the probability that he will
draw a girl’s name?
2
A 5
7
C 1
2
3
F 8
8
H 1
7
5
B 12
5
D 7
1
G 3
1
J 2
7. Stanley is reading a 224-page book.
There are illustrations on 14 pages.
If Stanley opens the book at random,
what is the probability that the page
will have an illustration?
A 0.0004
C 0.0714
D 0.9375
B 0.0625
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
8. In Congress, each of the 50 states is
represented by 2 senators. If you
choose a senator randomly, what is
the probability that you will choose a
senator that represents Virginia?
F 25%
H 2%
G 10%
J 1%
95
Holt Mathematics