6.EE.1 Solving Expressions, Equations, and Inequalities

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What is an expression in mathematics?

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An expression is a combination of numbers, variables, and operators (such as +, -, ×, ÷) that represents a value.

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What does it mean to solve an equation?

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To solve an equation means to find the value of the variable that makes the equation true.

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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). Often remembered by the acronym PEMDAS.

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What is a variable in an equation?

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

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How do you isolate a variable in an equation?

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To isolate a variable, you perform inverse operations to get the variable alone on one side of the equation.

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If Ava whispers a number to Mason and he adds 3 to it to get 9, what is Ava's number?

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