By Kris Boulton on the 11th of June, 2012

Multiplication

Multiply the numerators and the denominators.

Division

Flip the second fraction (the reciprocal) and turn the division sign to a multiplication sign.

Addition/Subtraction

If the denominators are the same then subtract the numerators then the denominators.

If they are different, you must first find a common denominator, then you can work it out as you woul above.

Refine By Filsan on the 25th of October, 2012