How to Calculate a Discount and Sale Price | Math with Mr. J

Welcome to How to Calculate a Discount and Sale Price with Mr. J! Need help with calculating discounts and sale prices? You're in the right place!
Whether you're just starting out, or need a quick refresher, this is the video for you if you're looking for help with discounts and sale prices. Mr. J will go through discount and sale price examples and explain the steps of how to calculate a discount and how to calculate a sale price.
About Math with Mr. J: This channel offers instructional videos that are directly aligned with math standards. Teachers, parents/guardians, and students from around the world have used this channel to help with math content in many different ways. All material is absolutely free.
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Hopefully this video is what you're looking for when it comes to calculating discounts and calculating sale prices.
Have a great rest of your day and thanks again for watching! ✌️✌️✌️

[@MathwithMrJ]

✅Thanks so much for watching! ✌✌✌
⚠IMPORTANT NOTES WHEN WORKING WITH DISCOUNTS AND SALE PRICES⚠
✅This video used US currency in the examples, but discounts and sale prices can be calculated using this method with other currencies as well.
✅Money always goes to the hundredths place when we have change. For example, #1 gives us an answer of 10.2 when we multiply 68 x 0.15. I wrote the discount as $10.20 because money goes to the hundredths place when we have change. $10.2 does NOT mean $10 and 2 cents, it means $10 and 20 cents, so we write it as $10.20. On the other hand, if you get a decimal that goes past the hundredths place, for example 15.83845, then it needs to be rounded to the hundredths place. That decimal would round to $15.84. Something to keep in mind.

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[@MissCraig]

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[@maakkb]

Hey, when doing the discounts for the second one how do you set it up. Where do you put the number where you multiply since it has extra digits?

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[@Leusiom1]

For an easier explanation:
1. Covert the percentage to a decimal form by moving the decimal to the left twice.
2. multiply them
3 with the multiplication answer, minus it from the original price.

[@Nicostuffz]

Thanks! Really got the job done for me!

[@flwrtuber]

What if both of them are dollars and none are percentage what do I do

[@br4inb0w.x3]

@@flwrtuberthen i believe you can just multiply them, then do the rest of the steps!

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Have a math test in a couple of days and really needed this! Thanks for your help

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This really helped me a lot! You simplified it and it was incredibly helpful and easy to understand!

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10.2 is 10.20

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[@gracelu2123]

Thank you for teaching me I have learnt alot from you and will never fail to calculate discount because I love discount on items when shopping.

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Thank you for teaching me how to calculate discount

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[@MizzAnonymous]

Thank you for helping me with discounts mr j

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[@hrt4siyeon]

One time I really wanted to buy something that's on a discount and my dad told me to calculate it and I just froze there not knowing how to calculate anything.

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Thank you this will help with job interview soon since there will be math test in it and theres discounts

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[@Fazepepinito7770]

Even though I don't understand English very well,but this helped me for an test

[@ArchangelicRelics]

I don’t know if this works every time like this method, or if it’s as accurate. However, my teacher taught me, what I believe, is a different method ?
You basically subtract the percentage from 100, divide that given number by 100, and then multiply it with the amount of money given.
For example : for question 2, you would subtract 40 from 100, giving you 60.
- After that, you would divide 60 from 100, giving you 0.6.
- And then finally, you would multiply 0.6 with $219.95, giving you the answer, $131.97.

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[@seyansealexander7198]

Can you do how to calculate the selling price please.

[@tinasalmon3482]

It could be easier...
Pretend the percentage is actually a whole number, then take the number 100 and subtract your whole number (%) from it , add a decimal in font of that difference, then multiply the % and price. The reason I believe this is better is because subtracting % from 100 is usually easier due to the fact that %'s mostly come in easy to subtract numbers like 15, 20, 35, and so on. Allowing most your work to be done in your head vs the other way. However doing it the way shown in this videos allows you to come up with HOW much will be discounted and this method skips that.
EXAMPLE:
Problem: 15% off of $68 = ?
1) 100 - 15 = 85
2) (add decimal in front) 85 ---> .85
3) $68 * .85 = $57.80
*if % is higher than 100 this won't work*

[@stevess356]

To do it in your head is real simple. Use the 40 percent off example and figure it like this. Use ten percent off the price and multiply it times four. 10 percent off of 219.95 is 21.99. "simply move the decimal point one over" I round it to "22" x 4 = 88 off. "NO PAD, PENCIL OR CALCULATOR"

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That only works with number that has decimal points right?

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