Mini Calculator Logo. Fraction Calculator

Fraction Caclulator.


Reduce to simplest fraction using lowest common denominator

Usage Instructions

  • Enter your fractions in the above calculator.
  • Select the mathmatical operation you would like to perform (add, subtract, multiply, divide) using the gray dropdown select box between the two fractions.
  • Results will update automatically whenever you change any of the values in the calculator.
  • A checkbox below the calculator allows you to select between reducing the fraction to the lowest common denominator equivalent (if checked) or not reducing it (if unchecked).

Equivalent Fractions Cartoon.

How to Manually Calculate Fractions

How to Add Fractions

  • Find the lowest common denominator by multiplying each denominator by the other.
  • Multiply each numerator by the same numbers the denominators were multiplied by.
  • Add the numerators together.
  • Reduce result to most simplified number.

How to Subtract Fractions

  • Find the lowest common denominator by multiplying each denominator by the other.
  • Multiply each numerator by the same numbers the denominators were multiplied by.
  • Add the second numerator from the first.
  • Reduce result to most simplified number.

How to Multiply Fractions

  • Multiply the numbers across the top together.
  • Multiply the numbers across the bottom together.
  • Reduce result to most simplified number.

How to Divide Fractions

  • Turn the second fraction upside down to create the reciprocal number.
  • Multiply the fractions together (just like in the multiplication section above.
  • Reduce result to most simplified number.

Funny Math Cartoons

 

Lowest Common Denominator.

Improper Fractions Cartoon.

I Did Half My Homework Cartoon.