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