Evaluating Algebraic Expressions

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What is an algebraic expression?

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CCSS.6.EE.A.2B

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How do you evaluate an algebraic expression?

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To evaluate an algebraic expression, substitute the values of the variables into the expression and perform the operations according to the order of operations (PEMDAS/BODMAS).

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CCSS.6.EE.A.2C

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What does the term 'substitution' mean in algebra?

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Substitution is the process of replacing a variable in an expression with a specific value.

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CCSS.6.EE.A.2C

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CCSS.6.EE.A.2C

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CCSS.6.EE.A.2C

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What is the order of operations in mathematics?

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The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

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CCSS.7.NS.A.3

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CCSS.6.EE.A.2C

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What is a variable in algebra?

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A variable is a symbol, often a letter, that represents an unknown value in an expression or equation.

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CCSS.6.EE.A.2B

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CCSS.6.EE.A.2C

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What is the difference between an expression and an equation?

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An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.