what's a good why for finding out how much money is left once you take the percent away?

Question

I'm in homeschool and I'm having trouble with percentage. Is there an easy way to figure out how much you have left once you take the percentage away. One of the problems 25.00, but you have 20% off, so how much do you save. plz help

Answer 1

principle X percentage. then principal - result.
like this:
25.00 x 0.20 = 5.00
25.00 - 5.00 = 20.00

Does that help?

Answer 2

With a percentage, you need to move decimal points.

Lets start with 20% The numerical equivilent of 20% is 0.20. A quick way of doing this is to remove the % sign and move the decimal point to the left by two places. So if you had 1%, the numberical equivilent would be 0.01. If you had 0.3%, it would be 0.003.

If you wanted to figure out how much money you have off, you would multiply the original price by the numerical equivilent of the percentage:

Amount Off = $25 * 0.20 = $5.

If you wanted to find out how much the item would cost after taking a percentage off, you could do one of two things.

1. Solve the equation for the amount of money off. Take that answer and subtract from the original cost ($25 - $5 = $20).

2. Use the equation $25 * (1 - 0.20) = $25 * 0.80 = $20

If you want to find the cost without solving for the amount of money taken off, you multiply the original cost by 1 minus the numerical equivilent of the percentage. If the item is 20% off, then it is 1 - 0.20 like I have shown above. If it is 33% off, it would be (1 - 0.33) or 0.66.

I hope this helps.

Answer 3

To do this in one calculation, find the difference between the given % and 100 (in this case,100-20=80). Multiply the amount (in this case $25) by the decimal equivalent (.8) and viola! - your answer.

ie. $25*0.8=$20

All you do this way is calculate for the remainder, rather than calculating the amount "off", then subtracting.

If you are ADDING a percent, multiply the original amount by 100+%, ie. if the original "markup" is 25%, multiply the price by 1.25. If the markup is 215%, multiply by 3.15 to get the new amount.

All you're doing here is calculating the total (inclulding original price and markup) together.

Answer 4

Whenever you are working with percentage(%), think of it as your decimal point. No matter what percentage you are trying to use, say; 20%= .20, 15%=.15, 1%=.01, so on so forth.
So you are looking for 20% off of $25.00. You would mulitply($25.00 X .20(20%) = $5.00(Discount) then $25.00 - $5.00(20% discount)= $20.00.
Note: think of your percentage as money... $1.00=100%, 50%= 00.50, 25%= 00.25, 1%= 00.01, 125%= 1.25, 150%= 1.50, so on.
So once you multiply 25.00X.20=500 move your decimal(.20) two digits over: from your last zero of 500, you get 5.00. It looks like this on paper:
EX: 25.
X .20
=500 so the decimal to the left of 20(.20) goes two places to the left of the last zero of your answer(500=5.00) or $5.00
It just takes a little practice and patience and you will find it fun and easy to use a percentage, just like using money. To find a percentage point of any number like $1.25 move your decimal point over to the right two times, so $1.25=125%, $1.10=110%, $1.25=125%, $00.75=75%, $00.50=50%, $00.25=25%, $00.10=10%, $00.01=01%
Good Luck.......

Answer 5

The easiest way to find out the amount you are left with is to subtract the percentage you have spent or is taken away from 100.Then you get the percentage you are left with.,Then multiply the total amount by it and you get the answer.now let us see an example being solved.You have $80 and you spend 40% of it.First we subtract 40% from 100% and we get 60%.Now 60% is equal to 60/100 .So multiply $80by 60/100 and you get ( 80X60)/100 or $48 which is the answer

Answer 6

Is over Of =% over 100
They are fractions
The "is" is your x factor then your fraction bar then 25.00 underneath.
Then you put =, then your 2nd fraction 20 over 100.
Then cross multiply.

Answer 7

On a calculator, 25-25%. Do not hit equals. If you're adding a percent, like taxes. 25+whatever %.