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Published byShona Bell Modified over 9 years ago
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Order of Operations
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What is a numerical expression? A numerical expression is a mathematical phrase that includes only numbers and operation symbols. (no equal marks)
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What does it mean to evaluate an expression? When you evaluate a numerical expression, you find its value or answer.
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Identify the order of operations. Steps: (1)Parentheses (2)Exponents (3)Multiply or Divide from left to right (4)Add or Subtract from left to right
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Example 1: Evaluate each expression. (A)9 + 12 x 2no parentheses no exponents 9 + 24multiply 33add
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Example 1: Evaluate each expression. (B) 4 x 3 2 + 8 - 16 no parentheses 4 x 9 + 8 -16exponents 36 + 8 -16multiply 44 - 16add 28subtract
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Example 1: Evaluate each expression. (C) 8 /(1 + 3) x 5 2 - 2 8/4 x 5 2 - 2parentheses 8/4 x 25 -2exponents 2 x 25 - 2divide 50 - 2multiply 48subtract
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Example 2: Regina bought 5 carved wooden beads for $3 each and 8 glass beads for $2 each. Evaluate the following expression to find the amount Regina spent for beads. 5 x $3 + 8 x $2 no parentheses no exponents $15 + $16multiply $31add
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Make up your own anagram for the order of operations. (1)Parentheses (2)Exponents (3)Multiply or Divide (4)Add or Subtract Please Excuse My Dear Aunt Sally People Eat Mid Day And Supper
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