Simplifying Variable Expressions

5 Questions | By Kstreza | Last updated: Dec 14, 2012 | Total Attempts: 245

Students will be able to define and identify variable expressions, the distributive, commutative, and associative properties; apply the order of operations and sign rules when simplifying variable expressions.

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Questions and Answers

1.

Variable expressions are mathematical statements that contain:
- A.
  
  Only numbers
- B.
  
  Only letters
- C.
  
  Numbers and letters
- D.
  
  One letter and no numbers
2.

Identify the commutative property:
- A.
  
  A + b = a + b
- B.
  
  A + b = b + a
- C.
  
  B + a = a + b
- D.
  
  A + b = 0
3.

Simplify - 3x + 5(x - y) - (- x + y)
- A.
  
  - 3x + 6y
- B.
  
  3x - 6y
- C.
  
  6x - 3y
- D.
  
  9xy
4.

When simplifying variable expressions, you always use the ____________________________ to determine the value of the expression.
5.

When simplifying variable expressions explain what it means to combine like terms.

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