Name ________________________________________ Date __________________ Class__________________
LESSON
11-7
Practice B
Adding and Subtracting Radical Expressions
Add or subtract.
1. 9 7 + 4 7 = ____ 7
2. −10 5 + 2 5 = ____ 5
3. 4 y + 6 y = ______
4. −2 3b + 10 3b = _________________
5. 6 15 −
6. 5 2 − 3 2x − 4 2 = _________________
15 +
15 = ______
Simplify each expression.
7.
108 +
75
________________________
10.
45 +
180
32 +
128
11.
________________________
22.
216t +
96t
________________________
52 − 1300
147 + 6 3
14.
9.
17. 6 3 +
300
50m +
72m
_________________________
23. 4 52x +
117x − 2 13
_________________________
25. Write the numbers 3 8, 4 2 and
in order from least to greatest.
63x
12. 5 98 − 3 32
________________________
15.
168 +
42
________________________
18. −2 3b +
_________________________
20.
28x +
________________________
_________________________
________________________
19. 4 2m + 6 3m − 4 2m
112
_________________________
________________________
16. 5 17 + 17 5
175 +
_________________________
________________________
13.
63 +
8.
27b
________________________
21.
16z + 2 8z − 3 z
________________________
24. 3 96k + 2 180
________________________
50
_________________________________________
26. The map at right shows the path traveled by a
delivery person on his afternoon route. Write the
total distance traveled as a simplified radical
expression.
_________________________________________
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
11-52
Holt McDougal Algebra 1
LESSON 11–7
7. 17 3
8. 18 2
Practice A
9. 5 15
10. 26 2
11. 8 14 3
2. 2
1. 8
3. 13;
m
4.
7 + 6 13
7. 5; 4; 9
15.
8. 9; 64; 9; 64; 3; 8; 11
9. 4; 16; 5; 4; 16; 5; 2; 4; 5
10. 8 7
11. 7 3
12. 5 11
13. 9 2 + 4 3
14. 4 5 + 10 2
15. 10 3
16. 10 2 + 5 3
17. 3 5 + 9 2
18. 8 6
19. 9 x
20. 12x 3
21. 16 3t
22. 21 m in.
23. 14 2 m
2. 8
3. 10 y
4. 8 3b
5. 6 15
6.
7. 11 3
8. 12 7
14.
11 2
3
5 6
2
16. 11 2b 4 b
17. 23 2t
18. 6 3ab 4 ab
19. 7 5xyz
20. 45 11
2
21. 13 5z z
22. a. 5 2 units
b. 6 2 units
c. 11 2 units
Review for Mastery
Practice B
1. 13
3+ 5
13.
6. 6 2b 4 b
5. 4 10
12. 14 5
1. yes; 11 2y
2. no
3. no
5. 6 13
4. yes; 11
6. 5 2
7. 11 5
8. 10 3a
10. 7 6
9. 8 x
2 3 2x
11.
16 i 2 ;
10. 9 5
12.
9i3;
11. 8 13
12. 23 2
13.
25 i 5 ;
13. 12 2
14. 13 3
14. 12 3
15.
15. 3 42
16. 5 17 + 17 5
16. 4 7 + 14
17. 4 3
17. 16 3
18.
18. 4 7x
19. 10y
19. 6 3m
20. 11 2m
9. 5 7x
21.
z + 4 2z
23. 11 13 x 2 13
25. 4 2 ,
50 , 3 8
3b
16
9
2; 4 2; 5 2
3; 3 3; 4 3
25
5; 5 5; 6 5
3
Problem Solving
22. 10 6t
1. 12 5 ft
2. 6 6 + 8 3 ft
24. 12 6k + 12 5
3. 11 3 + 9 5 lbs
4. 10 30 + 16 ft
26. 5 + 8 7 miles
5. D
6. H
7. D
8. H
Practice C
1. 10 3
2. 5 t
3. 11 11 + 2 5
4. 6 3
5. 4 2
6. 3 3
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
A61
Holt McDougal Algebra 1