What is 90 % of 80 ?

To find 90% of 80, you can use a simple calculation. The term "percent" means "per hundred," so 90% can be expressed as a fraction: 90 out of 100, or 0.90 in decimal form. To calculate 90% of 80, you multiply 80 by 0.90.

Step-by-Step Calculation

Here’s how you can break it down:

• First, convert the percentage to a decimal: 90% = 0.90.
• Next, multiply this decimal by the number you want to find the percentage of: 0.90 × 80.
• Now, perform the multiplication: 0.90 × 80 = 72.

So, 90% of 80 is 72.

Understanding the Concept

To further clarify, think of percentages as parts of a whole. If you have 80 items, and you want to know what 90% of that is, you are essentially asking how many items would represent 90 out of every 100 items. In this case, 72 items would represent that 90% of the total.

Real-World Application

Understanding percentages is crucial in various real-life situations, such as calculating discounts during shopping, determining grades in school, or analyzing data in business. For instance, if a store is offering a 10% discount on an item that costs $80, knowing how to calculate percentages helps you quickly determine how much you will save.

In summary, finding 90% of 80 involves a straightforward multiplication process, resulting in 72. This skill is not only useful in math but also in everyday decision-making and financial literacy.