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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
-2

I would like to have some explanations for understanding percents.... Apr 5, 2019
#2
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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    !!!   Apr 5, 2019
#3
-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

#4
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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
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Sure. But remember this dosen't work for  like finiding 3.4 percent of a number just any  whole number from 1-100

edited by HiylinLink  Apr 5, 2019
#7
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OK....post it up, Nickolas....I'll check it....   CPhill  Apr 5, 2019
#6
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What is 45 take 20%

Apr 5, 2019
#8
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20% of 45  =  .20 * 45  = 9

If you wanted 20% off 45, just subtract 9 from 45  = 36   CPhill  Apr 5, 2019
#9
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$$\frac{45}{100}=0.45$$

$$0.45\times20=9$$

#10
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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
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Could you give me one??

Nickolas  Apr 5, 2019
#12
-4

You must not be following a certain step I guess.

#13
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So I will see I one like 60 take away from it 20%

Nickolas  Apr 5, 2019
#14
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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   CPhill  Apr 5, 2019
#15
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Some what understand alittle still confused

Nickolas  Apr 5, 2019
#16
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60.....take away 20%

20%  = .20

So

.20 * 60  =  12

Take 12 away from 60  =

60 - 12  =

48   CPhill  Apr 5, 2019
#17
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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
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Sorry for interuption but Mr Cphill sir I have a question....

#19
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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???   CPhill  Apr 5, 2019
#20
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Sorry for interuption but Mr Cphill sir I have a question....

#21
0   CPhill  Apr 5, 2019
#22
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Thanks it isn't math and it sounds cheeky but how long have you been doing the   on your question kind of curious for my math forum history guide sounds weird but I'm making one XD

#23
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HAHAHA!!!!!!....the   is kind of my "trademark"   .....I've been doing that since forever....!!!!   (  See ??? )

CPhill  Apr 5, 2019
#24
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Awsome I have to find my mark XD

Nickolas  Apr 5, 2019
#25
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OOOH  now I see hey thats pretty neat I will take note XD