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Ch. 6 Expressions Pretest
Contributed by: Carlson
  • 1. In the expression x + y + 5, what is/are the variable(s)?
A) x and y
B) I don't know
C) x
D) y
E) 5
  • 2. In the expression 2z + 3z + 4, what is/are the variable(s)
A) 2
B) z and 4
C) 2z
D) I don't know
E) z
  • 3. Which expression has two different variables?
A) 9x+3x-12
B) I don't know
C) 6a + 3a
D) 2x + 3y
E) 2y - 9
  • 4. What is the value of the expression 25•(5-1)÷4-12
A) 13
B) 19
C) 14
D) I don't know
E) 18
  • 5. What is the value of the expression 7+9•(3+8)
A) 42
B) 176
C) I don't know
D) 56
E) 106
  • 6. Evaluate the expression if e = 1/3: 9e2
A) 6
B) I don't know
C) 1
D) 3
E) 14
  • 7. Factor the expression 35x + 63y
A) 44xy
B) I don't know
C) 7(5x + 9y)
D) 5(7x)+9y
E) 98xy
  • 8. Simplify the expression x + 4x + x
A) 4(3x)
B) 4x + 2x
C) I don't know
D) 4+3x
E) 6x
  • 9. Simplify the expression (3•x) • 11
A) 3x•11
B) 33+x
C) x=33
D) 33x
E) I don't know
  • 10. What property is used in this expression: 15+(5+8) and (15 + 5) + 8
A) I don't know
B) Commutative Property
C) Distributive Property
D) Identity Property
E) Associative Property
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