Fractions whose denominators are the same are called **similar fractions**, otherwise they are called **dissimilar fractions**. The fractions 1/9 and 7/9 are similar fractions, while 3/4 and 2/3.

Adding similar fractions is easy. Just copy add the **numerator** and then copy the **denominator**. For example,

**1**/9 +** 7**/9 = 8/9.

Adding dissimilar fractions is a bit more complicated. You have to get the Least Common Multiple (LCM) of the denominators. For example, if we want to add 3/4 and 2/3, we get the LCM of 4 and 3 which is equal to 12. You then change the given to equivalent fractions. The addition becomes

9/12 + 8/12 = 17/12.

**Shortcut: How to Add Two Fractions Faster**

We can use a shortcut to add to two add fractions. We will only discuss dissimilar fractions because similar fractions are too easy to add. Below are the steps for the shortcut **3**/**4 and 2**/**3**. Continue reading