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Name _______________________________________ Date __________________ Class __________________
LESSON
1-5
Practice C
Square Roots and Real Numbers
Find each square root.
1.
10,000
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4.
625
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2.  1
64
121
3.
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5.  2.56
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6. 
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169
196
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7. A student is painting one wall of a room. A square
window is located in the middle of the wall to be
painted. The window measures 3 feet on one side.
The area of the wall, not including the window,
is 80 ft 2 . Find the height of the wall to the
nearest tenth.
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Write all the classifications that apply to each real number.
8.
361
9.
7
12
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________________________________________
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10. 14
11.  24
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Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
1-37
Holt McDougal Algebra 1
LESSON 1–5
Review for Mastery
1. 52; 62; 92; 102;
1; 4; 9; 16; 49; 64; 121; 144; 169
Practice A
1. 5
3.
1
6
2. 2
2.
4. 4
9;
16 ;
64 ;
81 ;
121 ;
169
1; 2; 5; 6; 7; 10; 11; 12
5. 10
6. 
2
3
3. 11
4. 8
7. 8.7 feet
8. 7.1 feet
5. 16
6. 20
9. integer, rational, terminating
7.
10. irrational
12. natural, whole, integer, rational,
terminating
1
7
8. 
5
12
10. real number, rational number, repeating
decimal
Practice B
3.
1
13
9. real number, rational number,
terminating decimal, integer, whole
number, natural number
11. rational, repeating
1. 12
144 ;
2. 6
11. real number, irrational number
4. 14
Challenge
5. 8
2
6. 
5
7. 3.5 feet
8. 5.2 feet
9. irrational
1. 730
2. 730
3. 1430
4. 532,900
5. 2,044,900
6. 2,577,800
7. 1606
8. 5226 ft
9. 5226 ft
10. rational, repeating
11. integer, rational, terminating
Problem Solving
12. natural, whole, integer, rational,
terminating
1. 11 ft
2. 21 in.
3. rational number; repeating decimal
13. whole, integer, rational, terminating
4. 2.2; irrational
14. natural, whole, integer, rational,
terminating
5–7
Side length (in.)
Practice C
1. 100
2. 1
8
3.
11
4. 25
5. 1.6
13
6. 
14
10
14.1
20.5
24
5. A
6. J
7. B
7. 9.4 feet
8. natural, whole, integer, rational,
terminating
9. rational, repeating
10. integer, rational, terminating
11. irrational
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
A7
Holt McDougal Algebra 1