Скачать или смотреть PERCENTAGES 5 | Work out the Original Amount Reverse Percentages

Learn How to Calculate Reverse Percentages

Master the concept of reverse percentages with this essential guide designed for GCSE Maths students.

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Key Concepts:

• Understanding Reverse Percentages: Gain a clear understanding of what reverse percentages are and how they are used in real-life situations. Reverse percentages help you find the original value before a percentage increase or decrease was applied.
• Calculating Reverse Percentages: Discover the step-by-step method for calculating reverse percentages, which includes:
◦ Identifying the final value and the percentage change.
◦ Using the formula:
▪ Original Value = Final Value / (1 ± (Percentage / 100))
• Use "+" for percentage increases and "−" for percentage decreases.
◦ Understanding how to rearrange the formula to find the original value based on the context of the problem.
• Example Calculations: Walk through practical examples to illustrate how to apply the formula in real-life scenarios, such as determining the original price of an item after a discount or finding the initial salary before a raise.

By the End of This Video, You'll Be Able To:

• Define reverse percentages and their significance in mathematics.
• Accurately calculate the original value using reverse percentage calculations.
• Apply these calculations to real-life situations, such as discounts, tax calculations, and salary adjustments.
• Develop confidence in using reverse percentages for effective problem-solving.

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