Author:
Peter Berry
Date Of Creation:
12 February 2021
Update Date:
1 July 2024
Content
Discount calculation is one of the most useful math skills you should learn. You can apply to calculate tips at restaurants, discounts in stores, or give discount policies for your own products or services. The basic discount method is to multiply the original price by a percentage. To calculate the discounted price, subtract the discount rate from the original price. You can use the calculator or mental math to calculate the discount rate.
Steps
Method 1 of 3: Calculate the discount rate and the discount price
Convert percentages to decimals. The way to do it is to take the percentage and add the comma to the right of the last digit. Then shift the comma two digits to the left, you get the percentage converted to decimal. You can also use symbols on a calculator.
- For example, you want to calculate the post-discount price of a shoe that normally costs $ 69.95. If these shoes are discounted 25%, you need to convert 25% to decimal by thinking.
Multiply the base price of the shoe by the decimal number. You can do the math or use the calculator. This step helps you determine the discount, or discount, on the original price.- For example, to calculate a 25% discount on a shoe that costs $ 69.95, you would take.
Subtract the discount from the original price. To do subtraction, you would align the two numbers with the decimal point, then subtract as normal integer subtraction, and finally add the decimal comma to the result. You can also use a calculator. The result of subtraction is the product price after the reduction.
- For example, a shoe with an initial price of $ 69.95, a discount of $ 17.49, calculate the following price reduction by subtracting: So, the shoe price after the drop is $ 52.46.
Method 2 of 3: Estimating discount and selling price after discount
Round the initial selling price to the nearest round number. Use the rounding rule to round up or round down. Doing so makes it easier for you to determine the discount percentage.- For example, if the initial price of a shirt is $ 47.89, it will be rounded to $ 50.00.
Calculate 10 percent of the rounded price. To calculate 10% of a price, make in mind the price marked with a decimal point. Then advance the decimal point one digit to the left. The main result is a 10% equivalent value.- For example, to calculate 10% of 50 dollars, think. So, 5 is 10% of 50.
Determine the number of dozen units in the discount percentage. To calculate the number of tens, divide the percentage by 10 using regular division. Do not notice the number of years in this step.
- For example, if a shirt has a 35% discount, you need to determine how many dozen units in 35. So there are three times ten in 35.
Multiply by 10% of the rounded price by the multiplier. The multiplier is the number of dozen units in the discount percentage. Once you have determined what 10% of the price is, determine the values of the larger percentages by multiplying by the number of tens.
- For example, if you have calculated that 10% of $ 50 is 5, to determine what 30% of 50 is, you multiply $ 5 by 3, since there are 3 tens in 30:. So, 30% of 50 dollars is 15 dollars.
Calculate the rate of 5% of the rounding rate if necessary. You need to do this step if the discount percentage ends at 5 and not 0 (for example, 35% or 55%). It is easy to calculate what 5% is by dividing 10% of the original price by 2, since 5% is half of 10%.
- For example, if 10% of $ 50 is $ 5, then 5% of $ 50 is $ 2.50, since $ 2.50 is half of $ 5.
Add a 5% portion to the discount value if needed. The result is the total estimated discounted value of the item.
- For example, if the shirt is down 35%, you first get 30% of the price of $ 15. Then you calculate 5% of the price of 2.50 dollars. Sum of 30% and 5% you get. So the estimated discount for the shirt is $ 17.50.
Subtract the discount value from the rounded price. You get the estimated discounted selling price.
- For example, if the rounding price of the shirt is $ 50, and you get a 35% discount that corresponds to $ 17.50, then. So a shirt that costs $ 47.89 after a 35% discount will cost around $ 32.50.
Method 3 of 3: Examples
Accuracy of selling price after discount. A television starts at $ 154.88. The discount rate for this TV is 40%.
- Convert a percentage to a decimal number by moving the decimal point two digits left:.
- Multiply the original price by the decimal:.
- Subtract the discount value from the original price:. So the television price after the reduction is 92.93 dollars.
Calculate the price of the camera is discounted 15%. The starting price was $ 449.95.
- Convert the discount percentage to a decimal number by moving the decimal point two digits to the right:.
- Multiply the original price by the decimal:.
- Subtract the discount value from the original price:. So the price of the camera after the discount is 382.46 dollars.
Estimated selling price after discount. A tablet that normally costs $ 199.99. The discount rate is 45%.
- Round off the original price to the nearest round number. Since $ 199.99 is only 1 cent less than $ 200 round, you round up to $ 200.
- Calculate 10% of the price after rounding. Moving the decimal point one digit to the left, you get 10% of $ 200.00 which is $ 20.00.
- Determine number of dozen units in discount percentage. Do, you get to get 4 tens in 45%.
- Multiply the 10% rounding price by the appropriate multiplier. Since the discount rate is 45%, you multiply the value of the 10% of the rounding price by 4:
- Calculate 5% of the rounding price. Since 5% is a half of 10% and 10% is worth $ 20, then half would be $ 10.
- Add a value of 5% to the discount value. 40% is 80 dollars, so 45% is 90 dollars.
- Subtract the discount value from the rounded price:. So the estimated sale price after discount is 110 dollars.
Advice
- Download a reliable discount calculator app to your phone. You can search for the keyword "discount calculator" on the Google Play or App Store, then open the app, set the discount rate and enter the price of the item. to determine the discount rate.
- You can also automatically calculate the price after the discount instead of subtracting the discount value from the original price. Subtract 100 from the discount percentage. For example, if the discount rate is 30 percent, the discounted price will be 70 percent of the original price. Use the same calculation above to calculate what the 70 percent of the original price corresponds to the post-discount sale price.
