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When you are finding a percent do you always multiply say like what is 20% off 80 what would it be?? 

 Apr 5, 2019
 #1
avatar+1013 
-2

I would like to have some explanations for understanding percents.... smiley

 Apr 5, 2019
 #2
avatar+102417 
0

Note, Nickolas, that 20% off  is the same thing as 80% of something = .80 ...so....

 

.80  *  80   =     64

 

Another way is to take 20% of 80   =  .20 * 80  =  16

 

Then....subtract this from 80   =

 

80 -  16   =    64    !!!

 

 

cool cool cool 

 Apr 5, 2019
 #3
avatar+476 
-4

What I some times so if its a percent like 1 out of 100 I didvide the number by 100 then multily the quiotent by the percent

HiylinLink  Apr 5, 2019
 #4
avatar+1013 
-3

Wow that is simple so here is one I would like to try and make sure with you it is correct 

Nickolas  Apr 5, 2019
 #5
avatar+476 
-4

Sure. But remember this dosen't work for  like finiding 3.4 percent of a number just any  whole number from 1-100

HiylinLink  Apr 5, 2019
edited by HiylinLink  Apr 5, 2019
 #7
avatar+102417 
0

OK....post it up, Nickolas....I'll check it....

 

cool cool  cool

CPhill  Apr 5, 2019
 #6
avatar+1013 
-2

What is 45 take 20%

 Apr 5, 2019
 #8
avatar+102417 
0

20% of 45  =  .20 * 45  = 9

 

If you wanted 20% off 45, just subtract 9 from 45  = 36

 

cool cool cool

CPhill  Apr 5, 2019
 #9
avatar+476 
-4

\(\frac{45}{100}=0.45\) 

\(0.45\times20=9\) 

 

so the answer is 9

HiylinLink  Apr 5, 2019
 #10
avatar+1013 
-3

Every time I try your way CPhill the numbers go in the 100000 

 like 

 

40 take away 20% 

 

I do 40*40 = 1600

 Apr 5, 2019
 #11
avatar+1013 
-3

Could you give me one??

Nickolas  Apr 5, 2019
 #12
avatar+476 
-4

You must not be following a certain step I guess.

HiylinLink  Apr 5, 2019
 #13
avatar+1013 
-3

So I will see I one like 60 take away from it 20% 

Nickolas  Apr 5, 2019
 #14
avatar+102417 
0

Remember that we need to convert the % to a decimal

 

To do this....drop the % sign.....move the decimal two places to the left

 

So....for instance

 

20%   = 20.%  =   .20

 

So

 

20% of 45  =

 

20.% * 45 =

 

.20 * 45  =

 

9

 

 

cool cool cool

CPhill  Apr 5, 2019
 #15
avatar+1013 
-2

Some what understand alittle still confused 

Nickolas  Apr 5, 2019
 #16
avatar+102417 
0

60.....take away 20%

 

20%  = .20

 

So

 

.20 * 60  =  12

 

Take 12 away from 60  =

 

60 - 12  =

 

48

 

 

cool cool cool

CPhill  Apr 5, 2019
 #17
avatar+1013 
-3

To me it is changing I have not got one right it keeps changing the way it is multiplied to 

Nickolas  Apr 5, 2019
 #18
avatar+476 
-4

Sorry for interuption but Mr Cphill sir I have a question....

HiylinLink  Apr 5, 2019
 #19
avatar+102417 
0

Ok...let's forget the decimals  and write 20% as 20/100

 

So

 

(20 /100)  * 60   =     1200 / 100  =   12

 

Take this away from 60   and we get

 

60 - 12  =

 

48

 

Is that a little easier for you???

 

 

cool cool cool

CPhill  Apr 5, 2019
 #20
avatar+476 
-4

 

Sorry for interuption but Mr Cphill sir I have a question....

HiylinLink  Apr 5, 2019
 #21
avatar+102417 
0

OK , HL.....ask away!!!!

 

cool cool cool

CPhill  Apr 5, 2019
 #22
avatar+476 
-4

Thanks it isn't math and it sounds cheeky but how long have you been doing the coolcoolcool on your question kind of curious for my math forum history guide sounds weird but I'm making one XD

HiylinLink  Apr 5, 2019
 #23
avatar+102417 
0

HAHAHA!!!!!!....the  cool cool cool   is kind of my "trademark"   .....I've been doing that since forever....!!!!

 

 

cool cool cool

 

(  See ??? )

CPhill  Apr 5, 2019
 #24
avatar+1013 
-2

Awsome I have to find my mark XD 

Nickolas  Apr 5, 2019
 #25
avatar+476 
-4

OOOH  now I see hey thats pretty neat I will take note XD

HiylinLink  Apr 5, 2019

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