Percentages, Fractions, and Decimal Values

20, as a percentage of 1200 = 100*20/1200 = 1.66%

Percent Error is the difference between the true value and the estimate divided by the true value and the result is multiplied by 100 to make it a percentage. The percent error obviously can be positive or negative; however, some prefer taking the absolute value of the difference. The formula is the absolute value of the experimental value (minus) the theoretical value divided by theoretical value times 100. % error = (|Your Result - Accepted Value| / Accepted Value) x 100

I never saw much point in giving the answer to a mathematical question if the person didn't explain how to get to that answer. With calculators today many mathematical equations are easy to figure, but I am a strong believer in the person understanding the formula and how it works, not just typing numbers into a calculator and magically getting an answer. The question is what is 20% of $12,100. First we must change the percentage to a decimal, this is easily done by moving the decimal place to spaces to the left (the % represents the decimal). Therefore it gives us .20 Then simply multiply $12,100 x .20 12,100 x .20 = 2,420 Since we know we are dealing in dollars the answer is $2,420

The easiest and simplest way to calculate a percentage of any number is to remember that 10% of any number, is the number itself with the decimal point one place to the left. I.e 10% of 1478 is 147.8 (The decimal one place to the left) 10% of 100,000,000 is 10,000,000. That means that 10% of 80.00 is 8.000 (keeping the insignificant digits). So 20% would be $16.00. But we need 5 percent more, so we just split our 10% in half. Half of 8 is 4. So 25% of 80.00 is 16 + 4 which is 20.

None, its just a randomly generated number

Basically "precipitating factors" are the causes of something.

To convert a fraction (or decimal) to percentage, multiply by 100, thus: 8/25 = 8/25 x 100% = 32%

321%...........you take decimal and multiply it by 100.

30/1350 x 100 = 2.2 recurring (that is, 2.2222...) percent.

0.05x 300,000,000=15000000 0.05 because 5% in decimal form is 0.05, 100% is 1.00 etc, if it is in tens or less it adds a zero for each category(100's,10's,1's,0.1's etc) so since 5 is a one (0-9) it has two zeros past the decimal point.

2000. You can determine this by multiplying 80,000 by .025 using a calculator, or if doing it by hand, divide 80,000 by 100 to get 800, and multiply by 2.5 to get 2000.....

The percent sign % can be defined as "divide by 100". So the decimal of 140% would be 140/100 or 1.4 So if you wanted to know what 140% of any number was you could multiply by 1.4 i.e. 140% of 50 is 50 x 1.4 = 70, or since multiplication is distributive you could also do this (140 x 50)/100 which will also give you 70 1.4

Multiplying decimals by 100 will convert them to percentages. If you wish to remove the recurring decimal, convert it to a fraction by putting the recurring digit(s) as the numerator over a denominator of the same number of 9s and reducing the fraction to its lowest terms. Examples 0.333333333... To a percentage: 0.333333333... x 100 = 33.3333333...% 0.3333333... as a fraction: repeating digit is 3 so put as the numerator over a denominator of one 9 to give the fraction 3/9 = 1/3 So 0.333333333... = 33 1/3 % 0.1428571428... To a percentage: 0.1428571428... x 100 = 14.28571428...% 0.28571428... as a fraction: repeating digits are 285714 of which there are six, so put as numerator over a denominator of six 9s to give the fraction 285714/999999 = 2/7 So 0.1428571428... = 14 2/7 %

To find 90% of 40, just multiply .90 times 40, which equals 36. Since 10% of 40 is 4, then 90% of 40 are 4*9=36.

"30 percent of 80 dollars" is expressed as "30% times 80 dollars". Then: 0.3 * $80 = $24

Note that: 9 is in the first decimal place Next to that is another 9. Since "another" 9 is at least 5, round up the value to obtain 3.0.

"Ten percent of five thousands dollars" is interpreted as "10% * $5000" Then, 0.1 * $5000 = $500

10,000 ppm Solution Method: 1. A ppm = 1/1,000,000 = 0.000001 2. What you want to know is: how many ppm would = 1% 3. p * .000001 = .01 4. p = .01 / .000001 5. p = 10,000 You could also do it this way: 1. 1% of 1,000,000 = ppm = 10,000 ppm (but that method lacks a clear path to understanding). === previous answer's method: 1%=1/100=1000000/100=10000ppm.

Method 1: 80 * .4 + 80 = 32 + 80 = 112 Method 2: 1. Add 100% to 40% = 140% 2. Convert 140% to decimal form: 140%/100 = 1.4 3. Multiple 1.4 * 80 = 112 <--- this is your answer. Note: The reason you add 100% to the 40% is because the phrase "increase 80" means you have to add 100% of 80 (which is 80 * (100%/100) = 80 * 1 = 80) to the increasing percentage (80 * 40% = 80 * (40%/100) = 80 * .4 = 32) to get your final answer (80 + 32 = 112). It looks like this in summary form: 80 * 100% = 80 * (100%/100) = 80 * 1 = 80 80 * 40% = 80 * ( 40%/100) = 80 * .4 = 32 80 + 32 = 112 You should be able to easily see that you can add 100% + 40% to get 140%, which converts to the decimal number 1.4 1.4 * 80 = your answer (i.e. 112). ============== Previous explanation: Right so you take 80, divide it by 10 (100 if you wanna stay with the full shabang) then multiply it by 4 (40 if you have already divided by 100) and the answer will be 32. add this number to 80. The answer is 112

To find 4 percent of a number, multiply the number by 0.04. In this instance, 0.04 x 35000 = 1400. Therefore, 4 percent of 35000 equals 1400.

1: Divide the amount spent by the amount budget: for example: 100$ spent / 200$ budgeted = .5 2: .5 is a decimal value. To convert a decimal value to a percentage you must multiple it by 100 and put a "%" or "percent" after it as follows: .5 * 100 = 50% or 50 percent

162 = 256; 3 x 256 = 768; 840 - 768 = 72; 4 x 16 = 64, 72 - 64 = 8 Hexadecimal equivalent of 840 = 348

25% of 35000 is same as saying 0.25 * 35000 or ¼ * 35000. Then, evaluate that expression to get 8750

Ninety-nine and nine thousand, nine hundred ninety-nine ten-thousandths.

"65 percent of 170" is the same as saying "0.65 * 170". Evaluate that expression to obtain 110.5