Name
LESSON
Date
Class
Practice B
1-11 Addition and Subtraction Equations
Solve each equation. Check your answer.
1. 33 y 44
2. r 32 77
3. 125 x 29
4. k 18 25
5. 589 x 700
6. 96 56 t
7. a 9 57
8. b 49 254
9. 987 f 11
10. 32 d 1,400
11. w 24 90
12. 95 g 340
13. e 35 59
14. 84 v 30
15. h 15 81
16. 110 a 25
17. 45 c 91
18. p 29 78
19. 56 r 8
20. 39 z 8
21. 93 g 117
22. The Morales family is driving from Philadelphia to Boston. So far,
they have driven 167 miles. This is 129 miles less than the total
distance they must travel. How many miles is Philadelphia from
Boston?
23. Ron has $1,230 in his savings account. This is $400 more than
he needs to buy a new big screen TV. Write and solve an
equation to find out how much the TV costs.
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84
Holt Mathematics
Practice B
LESSON
1-11 Addition and Subtraction Equations
Practice A
LESSON
1-11 Addition and Subtraction Equations
Solve each equation. Check your answer.
Match each equation in Column A with its correct solution in
Column B.
Column A
1. n 16 8
Column B
1. 33 y 44
Column A
A. n 12
2. r 32 77
10. x 12 13
y 77
L. x 14
r 109
4. k 18 25
2. 5 n 7
B. n 13
11. x 8 40
M. x 17
3. 12 n 25
C. n 17
12. 34 16 x
N. x 18
4. n 17 11
D. n 24
13. x 5 19
P. x 25
5. n 18 35
E. n 27
14. 4 x 52
Q. x 32
6. 7 n 28
F. n 28
15. 12 x 50
R. x 33
7. n 12 40
G. n 35
16. 15 x 2
S. x 38
8. 24 n 25
H. n 49
17. 52 x 9
T. x 43
k7
14. 84 v 30
15. h 15 81
v 54
h 66
17. 45 c 91
18. p 29 78
c 46
p 107
20. 39 z 8
r 48
21. 93 g 117
z 31
g 24
22. The Morales family is driving from Philadelphia to Boston. So far,
they have driven 167 miles. This is 129 miles less than the total
distance they must travel. How many miles is Philadelphia from
Boston?
The total distance is 296 miles.
23. Ron has $1,230 in his savings account. This is $400 more than
he needs to buy a new big screen TV. Write and solve an
equation to find out how much the TV costs.
1,230 t 400; The TV costs $830.
50 h 23; h 73
83
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All rights reserved.
Holt Mathematics
Practice C
LESSON
1-11 Addition and Subtraction Equations
2. e 43 121
b 47
m 78
d 90
6. 840 45 f
f 795
x7
12
x 7 12
x 7 7 12 7 Add 7 to both sides.
x 0 19
Combine like terms.
x 19
770
9. 91 x 52
w 86
11. k 32 217
Think of the equation x 7 12
as a balanced scale. The equal sign
keeps the balance.
x 625
z 36
8. w 233 319
Holt Mathematics
Solving an equation is like balancing a scale. If you add the same
weight to both sides of a balanced scale, the scale will remain
balanced. You can use this same idea to solve an equation.
3. 601 x 24
e 164
5. 314 z 350
84
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
Reteach
LESSON
1-11 Addition and Subtraction Equations
Solve each equation. Check your answer.
10. 150 y 879
g 435
a 85
55 17 n ; n 38
7. d 67 23
12. 95 g 340
w 114
e 94
16. 110 a 25
20. In 2000, Sammy Sosa hit 50 home runs. His home run total was
23 runs fewer than the number of home runs that Barry Bonds
hit the next year. Write and solve an equation to find how many
home runs Barry Bonds hit in 2001.
4. m 45 123
f 998
11. w 24 90
d 1,368
19. Chris has 55 baseball trading cards. He has 17 more cards than
his sister Sara has. Write and solve an equation to find how
many trading cards Sara has.
1. b 32 15
9. 987 f 11
b 303
10. 32 d 1,400
U. x 48
t 40
8. b 49 254
19. 56 r 8
18. x 11 22
6. 96 56 t
x 111
7. a 9 57
13. e 35 59
J. n 52
x 154
5. 589 x 700
a 66
9. 46 n 19
3. 125 x 29
Column B
When you solve an equation, the idea is to get the variable by itself.
What you do to one side of the equation, you must do to the other
side.
x 39
12. 408 s 129
• To solve a subtraction equation, use addition.
y 729
13. 108 j 24
x 249
14. 1,204 w 389
j 132
s 537
• To solve an addition equation, use subtraction.
Solve and check: y 8 14.
15. p 167 321
w 815
p 488
16. In 2003, USA Today was the leading U.S. daily newspaper, with
a circulation of 2,154,539. This was 63,477 more than the
second leading daily newspaper, the Wall Street Journal. Write
and solve an equation to find the circulation of the Wall Street
Journal in 2003.
A true sentence, 14 14, means the solution is correct.
17. Mrs. Baker’s class has been raising money for a local charity. At
the end of last week, they had collected $238. By the end of this
week, they had a total of $419. Write and solve an equation to
find the amount collected this week.
Solve and check.
1.
2
n3
Holt Mathematics
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
119
2
b 5 11
5
b5
10
3. n 8 11
751 r 12; r 763 mi/h
2.
8
x0
18. Andy Green broke the sound barrier on land on October 15,
1997, in Black Rock Desert, Nevada. The speed of sound was
recorded at about 751 mi/h. This was about 12 mi/h less than
the land speed record that he set that day. Write and solve an
equation to find Andy Green’s land speed record.
Copyright © by Holt, Rinehart and Winston.
x28
x2
$238 m $419; m $181
85
y 8 14
To check, substitute 6 for y.
6 8 14
14 14 ✔
Check:
2,154,539 c 63,477; c 2,091,062
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All rights reserved.
y 8 14
y 8 8 14 8 Subtract 8 from both sides.
y06
Combine like terms.
y6
880
11 b0
4. y 6 2
5. a 9 4
y8
a 13
86
5
6
6. m 2 18
m 16
Holt Mathematics
Holt Mathematics