Algebra Review

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What is an algebraic equation?

Back

An algebraic equation is a mathematical statement that shows the equality of two expressions, which includes at least one variable. Example: 6 + b = 9.

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What is an algebraic expression?

Back

An algebraic expression is a combination of numbers, variables, and operations, but it does not include an equality sign. Example: 5d × 11.

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What is the Associative Property of Addition?

Back

The Associative Property of Addition states that the way in which numbers are grouped in addition does not change their sum. Example: 5 + (8 + 14) = (5 + 8) + 14.

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What is the Commutative Property of Multiplication?

Back

The Commutative Property of Multiplication states that changing the order of the factors does not change the product. Example: 4 x 9 = 9 x 4.

Front

What is a variable in an expression?

Back

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What is the Identity Property of Addition?

Back

The Identity Property of Addition states that adding zero to any number does not change the number. Example: 5 + 0 = 5.

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What is the Distributive Property?

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The Distributive Property states that multiplying a number by a sum is the same as multiplying each addend by the number and then adding the products. Example: a(b + c) = ab + ac.

Front

What is an expression?

Back

An expression is a combination of numbers, variables, and operations without an equality sign. Example: 3x + 2.

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What is the difference between an equation and an expression?

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An equation includes an equality sign and shows that two expressions are equal, while an expression does not include an equality sign.

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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.