A Full Guide-How to Calculate Percentages Using a Calculator

Calculating percentages is a handy skill for various tasks, like finding shopping discounts or handling finances. Using a calculator makes it faster and simpler. In this guide, we will explain how to work out percentages using a calculator, step by step. Plus, we’ll answer some common questions to help you fully understand the process.

A Full Guide- How to Work Out Percentages on a Calculator

Step-by-Step Guide to Calculate Percentages on a Calculator

1. Understanding the Formula

To calculate a percentage, you need to use the following basic formula:

Percentage=(Part×Percentage)÷100\text{Percentage} = (\text{Part} \times \text{Percentage}) \div 100

  • Part refers to the value you’re finding the percentage of.
  • The percentage refers to the specific value you want to calculate.

For example, to find 20% of 50, the formula would be:

Percentage=(50×20)÷100\text{Percentage} = (50 \times 20) \div 100

Understanding the Formula

2. Example: Calculating 20% of a Number

Suppose you need to find 20% of 200.

  • Enter the number: Type 200 into the calculator.
  • Multiply by the percentage: Press × (multiply) and then type 20.
  • Divide by 100: Press ÷ (divide) and then type 100.
  • Get the result: The answer displayed will be 40. Therefore, 20% of 200 is 40.
Calculating 20% of a Number

3. Example: Finding the Total Amount After a Percentage Increase

Suppose you want to find out the total cost after a 15% increase on an item that costs $100.

  • Enter the original amount: Type 100 into the calculator.
  • Multiply by the percentage: Press × and then type 15.
  • Divide by 100: Press ÷ and then type 100.
  • Add the result to the original price: The result will be 15. Now, add this to the original amount: 100 + 15 = 115.

Thus, the total after a 15% increase is $115.

Finding the Total Amount After a Percentage Increase

4. Example: Finding What Percentage One Number Is of Another

If you want to find what percentage 25 is of 200, you can follow these steps:

  • Enter the part value: Type 25 into the calculator.
  • Divide by the whole value: Press ÷ (divide) and then type 200.
  • Multiply by 100: Press × (multiply) and then type 100.
  • Get the result: The result will be 12.5, so 25 is 12.5% of 200.
Finding What Percentage One Number Is of Another

FAQs About How to Work Out Percentages on a Calculator

To find a percentage of a number, multiply the number by the percentage and divide the result by 100. For example, to find 25% of 200, multiply 200 × 25 and divide by 100, which gives you 50.

To calculate a percentage increase, determine the percentage of the original amount and add it to the original value. For example, for a 10% increase on $50, calculate 50 × 10 ÷ 100 = 5, then add it to 50 to get a total of $55.

Yes, you can calculate percentages manually by following the same formulas, but using a calculator makes the process quicker and easier, especially for larger numbers.

To calculate a discount, multiply the original price by the discount percentage, then subtract the result from the original price. For example, a 20% discount on $200 would be 200 × 20 ÷ 100 = 40, and the final price would be 200 – 40 = $160.

Conclusion

Calculating percentages on a calculator is simple once you grasp the basic formula and steps. Whether you’re calculating discounts, increases, or determining what percentage one number is of another, a calculator can make the process quick and easy. By following the simple steps outlined in this guide, you’ll be able to handle all your percentage calculations with confidence.

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