GCSE Maths - Percentage Increase and Decrease (Multiplier Method) #93
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- Опубликовано: 10 фев 2025
- This video covers:
How to increase or decrease a number by a given percentage. We cover 2 methods:
1) Find the percentage change, and then add or subtract it from the original
2) The multiplier method
This video is suitable for maths courses around the world.
KS3 - All on your course
GCSE Foundation - All on your course
GCSE Higher - All on your course
A-level - Not on your course
Maths Playlist:
• GCSE Maths (9-1)
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• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
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@@roycheng4206 bro help me if you know, how is 30% divided by 100 0.3???
@@nyriad7812 so basically to make a decimal a percentage, u have to multiply it by 100 which means you have to move the decimal point 2 places to the right. So in order to make a percentage a decimal, you have to do the opposite and divide it by 100. So basically 30%= 30/100=0.3 and 0.3 = 0.3 x 100% = 30%. idk if I explained it well but I hope it helped
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My exam is literally starting about 5 hours, and I'm glad that this video helps me to understand about Percentage Increase and Decrease
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Hi you can also do it another way for example increase 240 by 40% and you can add 40 percent to 100 which gives us 140 percent then you put it in a decimal so 1.4 times 240 equals 336 and decrease for example decrease 140 by 20% so you do 100 take away 20 so it’s 80 than you do 0.8 times 140 which is 112 your vids are amazing keep up the good work
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Thanks Cognito I understood how to decrease Percentages and how fo increase them❤good luck for your team
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Great to hear - good luck with your test!
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So imagine, u have a test on this will u be allowed to use a calculator for this topic/chapter
Very helpful information, thanks 👍
Glad it was useful!
instead of using 1 for 100% use 100% then add or minus whatever percentage then multiply with the number, so you don't have to worry about decimal points
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if your a teacher your students are super smart thank you soooo much Cognito but one thing how can we do it when its the percentage like 12% if we put a fraction on it how do we do it and also I liked and subscribed
Do you mean converting fractions to percentage?
Thank you i found this very helpful
thank you so much!
this video was very useful, because of you, know i understand how to increase and decrease a number by a percentage
Glad it helped!
Needed 🥳🥳
hey cognito, the video was really helpful but quick question, when do we have to use the multiplier method?? and thank you again your videos are the best
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GUYS THERE'S A MUCH EASIER WAY TO DO THIS AND ITS REALLY SIMPLE
if u wanna increase any number by any percentage you do:
X × 100+%/100
and if it's decrease:
X × 100-%/100
so for example; increase 120 by 40%
a. 120 × 140/100
=1
168
or reduce 120 by 40%
a. 120 × 60/100
=72
*this works with higher percentages and lower percentages as well
If you have a calculator
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Great video
I think the multiplier method is easier in my opinion tbh
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We're very happy to help, hope the exam went well 😊
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Do you know when you times by amount and you divide the percentage is there an easy way to do it . Example .. 0.3 X £120 is the an easier way ?
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Thanks so much poojah, glad you're enjoying the channel 😊