How to Calculate a Percentage and Solve Percent Problems

It is easier to work with percentages when they have been converted to decimal form.
••• Hemera Technologies/AbleStock.com/Getty Images

Percentages and fractions are related concepts in the world of mathematics. Each concept represents a piece of a larger unit. Fractions may be converted into percentages by first converting the fraction into a decimal number. You may then perform the necessary mathematical function, such as addition or subtraction, before converting the final decimal number into a percentage.

    Use the calculator to divide the numerator (top number) of the first fraction by the denominator (bottom number) of the first fraction. Write this decimal number down.

    Divide the numerator of the second fraction by the denominator of the second fraction and write this decimal number down.

    Perform the required mathematical function with the two decimal numbers. For example, if you are adding 1/4 and 1/5 together, these would convert into 0.25 and 0.20 respectively. Add 0.25 to 0.20 to get 0.45.

    Multiply the resulting decimal number by 100 to obtain the percentage. For the example above, 0.45 multiplied by 100 equals 45 percent.

    Things You'll Need

    • Two fractions
    • Calculator
    • Pen or pencil
    • Paper

Related Articles

How to Calculate the Percentage of Another Number
How to Do Fractions on a TI-30X IIS
How to Convert From Moles Per Liter to Percentage
How to Find an Equivalent Percent
How to Find a Percent of a Fraction
How to Divide Rational Numbers
How to Make a 1% Sucrose Solution
Characteristics of Aquatic Plants
How to Convert a Fraction to a Ratio
How to: Improper Fractions Into Proper Fractions
How to Multiply Fractions by Percentages
How to Calculate Moles
How to Find a Fraction of a Number
How to Divide Ratios
How to Make a Simple Circuit
How to Divide a Percent Using a Calculator
How to Subtract Percentages
How to Find the X Intercept of a Function
How to Subtract, Add & Simplify Fractions

Dont Go!

We Have More Great Sciencing Articles!