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

Nickolas Apr 5, 2019

#2**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 !!!

CPhill 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

HiylinLink
Apr 5, 2019

#4**-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**-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

#6

#10**-3 **

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

like

40 take away 20%

I do 40*40 = 1600

Nickolas Apr 5, 2019

#14**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

CPhill
Apr 5, 2019

#16**0 **

60.....take away 20%

20% = .20

So

.20 * 60 = 12

Take 12 away from 60 =

60 - 12 =

48

CPhill
Apr 5, 2019

#17**-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

#19**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???

CPhill
Apr 5, 2019

#22**-4 **

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

HiylinLink
Apr 5, 2019