What is the difference between fractions

It's a part of most important elementary school mathematics. For same or common denominator, the fraction subtraction is the difference between both numerators divided by the common denominator. For unlike, unequal or different denominators, the function LCM least common multiple is used to convert the fractions to have the common denominators to perform subtraction between the fractions.

Formulas to perform fraction numbers addition, subtraction, multiplication and division. Calculators Math Learning Resources. Fractions Subtraction. Two Fractions Multiple Fractions. Orange Blue Pink Green. Notes Insert this widget code anywhere inside the body tag Use the code as it is for proper working.

In fact, every possible such pair appears in this list, so it looks as if whenever two unit fractions have denominators that are consecutive then their difference will be a unit fraction. In order to decide whether this is always true I need to prove it. There are some patterns with some of them, but not all.

I notice that for some of these pairs, the denominator of one is half or double the other. So this type of pair always works. I still have some pairs of fractions to consider, some which have a difference that is a unit fraction once simplified, others of which give a unit fraction straight away. How does this happen? And indeed there are! Now I understand what I first observed. The fractions in this problem are all unit fractions. Exit fullscreen mode. Thinking about Numbers Package of problems A difference of two fractions Add to your resource collection Remove from your resource collection Add notes to this resource View your notes for this resource.