Name
class
VVfrdbCt
Date
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Practice 1-1 Variables and Expressions
Write an expression for each quantity.
1. the value in cents of 5 quarters
O '' $§
2. the value in cents of q quarters
oi^) £L*
3. the number of months in 7 years
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dd/ST)
/ *i
/^X
* "*"7/
4. the number of months in y years
5. the number of gallons in 21 quarts
6. the number of gallons in q quarts
Write a variable expression for each word phrase.
7. 9 less than k
8. m divided by 6
9. twice x
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77
10. 4 more than twice x
11. the sum of eighteen and b
12. three times the quantity 2 plus a
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Tell whether each expression is a numerical expression or a variable
expression. For a variable expression, name the variable.
"S
iSi
<
13. 4d
15. ^
V$l4>db(~£-'
(A
nVMWHA,!
Wp/TX>/Of)16.
14 - pP
17. 5 ^ - 9
M
19. 19 + 3(12)
20. 25 - 9 + *
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|
£
14. 74 + 8
The room temperature is c degrees centigrade. Write a word phrase for
each expression.
22. c - 7
JWS
7
X
Name
Class
Date
Practice 7-2 The Order of Operations
Simplify each expression.
1. 3 + 1 5 - 5 - 2
_
2. 5 - 6 + 2 - 4
3. 48 -K8 - 1
4. 6 8 - 1 2 - 2 - 3
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5. 6(2 + 7)
6. 25 - (6 • 4)
Vi
7. 3[9 - (6 -
- 10
o
7
9. 4 - 2 + 6 - 2
11
16 + 24
1
'• 3 0 - 2 2
8. 60 - (3 + 12)
10. 18 - (5 - 2)
IF
12. 2[4(9 - 7) + 1]
(L + 2 -+ 11) - 2
13. (8 ^8
14. 9 + 3 - 4
15. 1 8 - 3 - 5 - 4
16. 10 + 2 8 - 1 4 - 5
Insert grouping symbols to make each number sentence true.
17/3 + 5)- 8 = 64
18. 4 {e - 2J+ 7 = 23
19. 10 -J3 + 2)- 4 = 8
20/3 + 6s) 2 = 18
A city park has two walkways with a grassy
area in the center, as shown in the diagram.
10m
21. Write an expression for the area of the
sidewalks, using subtraction.
12m
grass
22. Write an expression for the area of the
sidewalks, using addition.
3m
6m
1m
Compare. Use >, <, or = to complete statement.
23. (24 - 8) - 4
24-8-4
24. 3 • (4 - 2) • 5
3-4-2-5
25. (22 + 8) - 2
22 + 8 - 2
26. 2 0 - 2 + 8 - 2
20 - (2 + 8) • 2
27. 11 • 4 - 2
Pre-Algebra
11 • (4 - 2)
28. (7 - 3) - (4 • 2)
7-3-4-2
Practice Workbook