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Evaluating Expressions with Variables and Numbers

Learn about variables, coefficients, and the order of operations to evaluate expressions with numbers and variables. Practice substituting values and performing operations to find the value of expressions.

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Evaluating Expressions with Variables and Numbers

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  1. Evaluating Expressions

  2. S.W.B.A.T • Use the order of operations to evaluate expressions with variables and expressions with numbers

  3. Brief Review • Variable • An unknown number • Examples x, y, z • Coefficient • The number in front of the variable • Examples: 2x, 6y, 4z

  4. Evaluating Expressions? • What does this mean? • When we substitute a specific value for each variable, and then perform the operations • Lets evaluate the expression 3y +2y when y = 5 • 3 ( 5 ) + 2 ( 5 ) • 15 + 10 • 25

  5. Practice • Work on the problems on the worksheet with a partner • If you have any questions , ask them!

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