In the previous two posts, we have learned two types of calculations about percentage: **ignoring the percent sign** and **making use of 10%**. In this post, we learn another math shortcut that is very useful in speed calculations about percentage.

One of the easiest ways to calculate for a percentage of a number is to convert percent into fractions. For example, 50% is equivalent to 1/2 so instead of multiplying the number by 0.5, you can just multiply by one half (or equivalently) divide by 2. Here are some examples.

**Example 1**

What is 50% of 284? Continue reading