73 calculators online
News:
2015.08.25
  Two cars related tables released today: Tire codes - speed ratings and Tire codes - load index
2015.07.30
2015.04.06
  This time 3 new calculators for fractions: Fractions: adding and subtracting, Fractions: 4 operations and Fractions: inverse (reciprocal). Each of them shows all sub-steps needed to compute common denominators, create improper fraction (if needed), reduce the fraction etc.
2015.03.29
  You love it or you hate it. You understand it or don't have a clue. Percents, percentage is a powerful tool to say about part of something. We made the Percentage calculator to make your life easier.

THIS IS ANCIENT VERSION OF CALCULLA.COM LEFT HERE FOR ARCHIVAL PURPOSES.
ALL CALCULATORS SHOULD STILL WORK, BUT YOU CAN'T BE SURE. WE ALSO DON'T UPDATE THEM, SO EXPECT OUTDATED INFO.
OUR SUGGESTION IS TO MOVE TO RECENT VERSION OF CALCULLA.COM BY CLICKING THE LINK: Fractions: adding and subtracting
Fractions: adding and subtracting
Calculator shows how to add or subtract two fractions step by step. Simply enter two fractions, select add or subtract and get list of all partial steps needed to compute result. Train your math with calculla!
How to use this tool
Calculator shows how to add (subtract) two fractions. Enter input fractions and select needed operation (addition or subtraction) in form below and calculla will compute the results by performing following steps:

  • I. Convert input fractions into improper form. If your fractions do not containt wholes part, then this step is unnecessary and can be skipped.
  • II. Find common denominator. If input fractions already have common denominator, this step can be skipped.
  • III. Perform operation. In this step, calculla adds (subtract) nominators and saves denominator without changes.
  • IV. Get wholes part out of result. This step is needed only if result is improper fraction i.e. its nominator is greater than denominator.
  • V. Shortening result to the simplest form.
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