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Substituting Numbers for Variables

Substituting Numbers for Variables. Algebra Ms. Milam 5 th Grade. In the following problems, substitute 10 for a. A + 1 = 17 – a = 9 a = 30 divided by a = 5 a + 6 =. Rule: Replace the variable with the number the variable is equal to, and solve the problem.

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Substituting Numbers for Variables

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  1. Substituting Numbers for Variables Algebra Ms. Milam 5th Grade

  2. In the following problems, substitute 10 for a. A + 1 = 17 – a = 9a = 30 divided by a = 5a + 6 = Rule: Replace the variable with the number the variable is equal to, and solve the problem.

  3. Ways to Show Multiplication • 5 x 4 (using a multiplication sign) • 6 · 8 (using a floating dot) • 8(9) or (7)(6) (using parentheses to separate the numbers • 3m 5x (having a number and a variable next to each other)

  4. Order of Operations Review • 1. What acronym will help you remember the order of operations? • Use the acronym “Please Excuse My Dear Aunt Sally” to remember the order of operations.

  5. Order of Operations Review • Complete these problems using the order of operations: • 8 + 4 x 2 – 6 • 3(4 + 6) + 3 • (12 – 6) + 27 ÷ 3 • 18 ÷ (6 + 3) – 1 • 10 + 3 – 2 x 3 • 4 + (7 + 2) ÷ 3 • 7 x 4 – 9 ÷ 3 • (2 + 8 – 8) x 4

  6. Check your answers!!! 1. 12 2. 33 3. 15 4. 1 5. 7 6. 7 7. 25 8. 8

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