Algebraic Expressions

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What is an algebraic expression?

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An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 5 is an algebraic expression.

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CCSS.6.EE.A.2B

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What does it mean to simplify an expression?

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To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.

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CCSS.7.EE.A.1

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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 abbreviated as PEMDAS.

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CCSS.7.NS.A.3

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Solve for y: 2y = 18

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y = 9

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CCSS.6.EE.B.7

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-50

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CCSS.6.EE.A.2C

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Simplify the expression: 23 + (30 ÷ 10) × 4

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35

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CCSS.6.EE.A.1

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Solve for r: r + 12 = 25

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r = 13

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CCSS.6.EE.B.7

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204

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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. For example, in the expression 2x + 3, x is a variable.

Tags

CCSS.6.EE.A.2B

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What are like terms?

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Like terms are terms that have the same variable raised to the same power. For example, 3x and 5x are like terms, while 3x and 4y are not.

Tags

CCSS.6.EE.A.2B