MP2 9 Week Review - SUBSTITUTE

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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. The order is: 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 percent?

Back

A percent is a ratio expressed as a fraction of 100. It is used to compare a number to a whole.

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How do you convert tons to pounds?

Back

To convert tons to pounds, multiply the number of tons by 2,000 (since 1 ton = 2,000 pounds).

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What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. It can be used to solve for unknown values.

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How do you find 25% of a number?

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To find 25% of a number, multiply the number by 0.25 or divide the number by 4.

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What is the formula for calculating the average (mean)?

Back

The average (mean) is calculated by adding all the numbers together and then dividing by the count of the numbers.

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What does it mean to simplify an expression?

Back

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

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How do you set up a percent proportion?

Back

To set up a percent proportion, you can use the formula: part/whole = percent/100.