7R Quarterly 1 Review

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What is the order of operations in mathematics?

Back

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

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Evaluate the expression: 21 - 2(3.45 + 9.3 ÷ 3)

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7.9

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What is the value of any number raised to the power of zero?

Back

Any non-zero number raised to the power of zero is equal to 1.

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24

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What does the absolute value of a number represent?

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The absolute value of a number represents its distance from zero on the number line, regardless of direction.

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3

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What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents a number in mathematical expressions or equations.

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What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute a factor across a sum.

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What is a fraction?

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