How do you take 20% off a price?
To quickly reduce a price by 20%, mentally divide the original amount by ten, then double that result. Finally, deduct this doubled figure from the initial price. This streamlined approach efficiently calculates the discounted value, providing the new cost immediately. As an example, $30 becomes $24.
Calculating 20% Discounts: A Simplified Approach
When it comes to discounts and price reductions, calculating the discounted price can sometimes be a tedious task. However, when it comes to a 20% discount, there’s a simple and effective mental math trick that can save you time and effort.
Step-by-Step Guide
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Divide by 10: Start by mentally dividing the original price by 10. This will give you a result that is 10% of the original amount.
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Double the Result: Take the result from step 1 and double it. This doubles the 10% to 20%.
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Subtract from Original Price: Finally, subtract the doubled result from the original price. This will give you the discounted price.
Example:
Let’s say you want to find the 20% discount on a $30 item.
- Divide by 10: $30 / 10 = $3
- Double the Result: $3 x 2 = $6
- Subtract from Original Price: $30 – $6 = $24
Conclusion
By following this simplified approach, you can quickly and easily calculate a 20% discount on any price. This method is especially useful for making mental calculations and providing an immediate estimate of the discounted value. Remember, practice makes perfect, so the more you apply this trick, the faster and more proficient you’ll become.
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