what is 10 of 84

2 min read 24-12-2024

Finding percentages is a common task in many areas of life, from calculating discounts to figuring out tips. This article will clearly explain how to calculate 10% of 84, and offer some helpful tips and tricks for similar calculations.

Understanding Percentages

A percentage is a fraction or ratio expressed as a number out of 100. For instance, 10% means 10 out of 100, which can be written as the fraction 10/100 or the decimal 0.10.

Calculating 10% of 84: The Easy Way

Calculating 10% of any number is particularly straightforward. Since 10% is equivalent to 0.1, you simply multiply the number by 0.1.

Therefore, 10% of 84 is 84 x 0.1 = 8.4

Calculating 10% of 84: The Fraction Method

Alternatively, you can use the fraction method. Remember that 10% is the same as 10/100, which simplifies to 1/10. To find 10% of 84, you multiply 84 by 1/10:

84 x (1/10) = 84/10 = 8.4

Why is 10% so Easy to Calculate?

The beauty of calculating 10% lies in its simplicity. Multiplying by 0.1 (or dividing by 10) is equivalent to moving the decimal point one place to the left. This makes mental calculations quick and easy.

For example:

10% of 250 is 25
10% of 1200 is 120
10% of 5.5 is 0.55

Calculating Other Percentages Based on 10%

Once you know 10% of a number, calculating other percentages becomes easier. For example, to find 20% of 84, you simply double 10% of 84 (which is 8.4):

20% of 84 = 2 x 8.4 = 16.8

Similarly, 5% would be half of 10%:

5% of 84 = 8.4 / 2 = 4.2

Practical Applications

Understanding how to calculate percentages is invaluable in everyday life. Here are some examples:

Sales and discounts: Determining the savings on sale items.
Tips and gratuities: Calculating the appropriate tip amount in a restaurant.
Taxes: Figuring out the tax on a purchase.
Finance: Calculating interest on loans or investments.

Conclusion

Calculating 10% of 84, or any number, is a fundamental skill with widespread applications. By understanding the basic principles of percentages and using either the decimal or fraction method, you can confidently tackle these calculations in various contexts. Remember, 10% of 84 is 8.4.