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You are reading an older version of this FlexBook® textbook: Algebra Explorations, Pre-K through Grade 7 Go to the latest version.

7.3: Solve for the Unknown Extras

Created by: CK-12

Extra for Experts: Solve for the Unknown - Apply Order of Operations

Figure out the value of each variable.

Follow the order of operations:

Parentheses first

Multiplication and division, left to right

Addition and subtraction, left to right

1. \quad 12 + 2 \times 3 \div 6 + (7 - 4) = q\!\\\!\\{\;} \quad \ q = \underline{\;\;\;\;\;\;\;\;\;\;\;\;\;\;}\!\\\!\\2. \quad 4 \times (6 - 2) \div 2 \times 3 = t\!\\\!\\{\;} \quad \ t = \underline{\;\;\;\;\;\;\;\;\;\;\;\;\;\;}\!\\\!\\3. \quad 2 \times (11 - 1) \div 2 = g\!\\\!\\{\;} \quad \ g = \underline{\;\;\;\;\;\;\;\;\;\;\;\;\;\;}\!\\\!\\4. \quad 3 \times (12 - 4) - (5 - 2) = m\!\\\!\\{\;} \quad \ m = \underline{\;\;\;\;\;\;\;\;\;\;\;\;\;\;}\!\\\!\\5. \quad 5 \times (7 + 3) \div 2 + 25 = s\!\\\!\\{\;} \quad \ s = \underline{\;\;\;\;\;\;\;\;\;\;\;\;\;\;}

Solutions

  1. q = 16
  2. t = 24
  3. g = 10
  4. m = 21
  5. s = 50

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CK.MAT.ENG.SE.1.Algebra-Explorations-K-7.7.3

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