When you calculate results that are aiming for known values the percent error formula is useful tool for determining the precision of your calculations. Percentage error approximate value exact value exact value 100.

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### Now let s try an example problem.

**How to calculate percent error physics**. Subtract the accepted value from the experimental value. Here we have to calculate the actual mass of the object. So measured value 13 62 grams percentage 22 22 text percentage error frac text measured value text true value text true value times 100 putting in the values we get 22 22 frac m t t times 100.

Percent error percentage error is the difference between an experimental and theoretical value divided by the theoretical value multiplied by 100 to give a percent. Multiply that answer by 100 and add the symbol to express the answer as a percentage. In some fields percent error is always expressed as a positive number.

Formula for percent error. Divide that answer by the accepted value. The formula is given by.

Steps to calculate the percent error. Then you divide the error in absolute value by the actual number in absolute value. The experimental value is your calculated value and the theoretical value is your known value.

The formula to calculate percent error is. Physics 08 10 2020 01 01 cutedoggo1828 how to calculate percent error. To calculate percentage error you subtract the actual number from the estimated number to find the error.

In this question we are given the mass of the object and percentage error.

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