Practice Reverse Percentages (finding Original Amounts) (2.6.1.3) - Unit 1: Number Sense & Operations: Foundations for Fluency
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Reverse Percentages (Finding Original Amounts)

Practice - Reverse Percentages (Finding Original Amounts)

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

If a notebook costs $5 after a 20% increase, what was the original price?

💡 Hint: Use Original Amount = Final Amount ÷ (1 + Percentage Rate).

Question 2 Easy

If a toy costs $15 after a 10% discount, find the original price.

💡 Hint: Apply the reverse percentage formula accordingly.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the formula to find the original amount when given the final amount and a percentage?

Original Amount = Final Amount × Percentage Rate
Original Amount = Final Amount ÷ (1 + Percentage Rate)
Original Amount = Final Amount + Percentage Rate

💡 Hint: Remember when to use '+' or '-' for your calculations.

Question 2

True or False: Reverse percentages can only be applied to increase calculations.

True
False

💡 Hint: Think about how discounts also work.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

The price of a video game was $80 after a 20% discount. What was the original price? Show your workings.

💡 Hint: Use the reverse formula for discounts.

Challenge 2 Hard

A smartphone costs $720 after a 10% increase. What was the starting price before the increase? Show your workings.

💡 Hint: Use the increase formula carefully.

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Reference links

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