This guide will help you learn how to calculate a percentage of any number! Below this page, you can learn two different methods of calculating a percentage of a number. Logically, as soon as a percentage of a number can be calculated, the change in the value of the number (price) can be calculated as to whether we calculate a percentage increase or percentage decrease.
How to calculate a percentage of number – first method
Percentage of a given number can be calculated in this way:
- First, we turn the percentage into a fraction (the percentage is the number, and in the denominator, we write 100).
- Then we multiply the fraction by the number we determine the percentage (we multiply the number by the number from which we determine the percentage, and the denominator remains 100).
- Finally, we divide and calculate the numerator and the denominator.
Example 1: Calculate 30% of 2000!
Step 1: First we write 30% in the form of a fraction. The fraction of the fraction has 30 and is in the denominator 100. Turning 30% into a fraction looks like this:
Step 2: We multiply the fraction by the number 2000. Multiply the number 30 by 2000, and the denominator 100 remains the same. The calculation is:
Step number 3: With the division of the numerator and the denominator of the last fraction it is obtained that:
60000: 100 = 600
Finally, we conclude that 30% of 2000 is 600!
Example 2: Calculate 25% of 800!
Step 1: First we write 25 % in the form of a fraction. The fraction of the fraction has 25 and is in the denominator 100. Turning 25% into a fraction looks like this:
Step 2: We multiply the fraction by 800. We multiply the number 25 by 800, and the denominator 100 remains the same. The calculation is below:
Step number 3: With the division of the numerator and the denominator of the last fraction it is obtained that:
20000: 100 = 200
Finally, we conclude that 25% of the 800 is 200!
Calculation Percentage of Number – Second Method
Percentage of number can be calculated in the second way:
- First, the percentage turns into a decimal number form (if the percentage is two-digit we write in format 0, XY, where X is the figure of his tenth, and y is the figure of his unit; if the percentage is one-digit, then we write it in format 0, 0y because there are only units).
- We multiply the decimal number obtained in the first step by the number from which we determine the percentage.
Example 3: Determine 10% of 250!
Step 1: First 10% turn into a decimal number! We write the number 10 in format 0, XY as follows:
10% = 0.1
Step 2: Multiply the decimal number 0.1 by the number 250. This calculation gives it:
0.1 x 250 = 25
Finally, we conclude that 10% of 250 is 25!
Example 4: Determine 75% of 200!
Step 1: First 75% turn into a decimal number! We write the number 75 in format 0, XY as follows:
75% = 0.75
Step 2: Multiply the decimal number 0.75 by the number 200. This calculation gives it:
0.75 x 200 = 150
Finally, we conclude that 75% of 200 is 150!
Video examples with two methods
The video below contains many examples that use different methods for calculating a percentage of a number.
Take a look at more examples to learn how to calculate a percentage of a number without using a calculator. Of course, this is possible for characteristic numbers that can easily calculate a product or quotient!
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Tags: %, How to calculate, Number, Percentage
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