Percent Equations

Which Equation is used to find "Part"?

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Which equation is used to find Whole?

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What equation is used to find Simple Interest?

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What equation is used to find Percent Change?

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What equation is used to find Percent Error?

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What equation is used to find Percent?

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To find simple interest, you do NOT need:

• Time

• Interest Rate

• Principle (amount of money you started with)

• Error

To use equations that involve percent, it is important to...

• make sure your percent is written as a decimal.

• Always subtract the part and the whole.

• Make sure you use division in every problem.

• Copy off your neighbor.

Which is NOT the same as Percent Change?

• Markup

• Markdown

• Percent Increase

• Finding the Whole

To find percent error, you must

• Find the whole.

• Divide by the subtracted value.

• Subtract the estimate/predition and the real answer.

• Multiply by the subtracted value.