How the percentages are calculated ? and what's their importance ?

Calculating percentages can be an easy task. There are many percentage calculators online that can help with the simple search of the "percentage calculator". 

 Percentage calculation However, there may be a time when it is necessary to explain to children without digital assistance the importance and relevance of percentage calculations: salary increases, allowance increases, interest rates, discounts on items for sale.

What is a percentage? The word percent comes from the word percent. If you divide the word percent into its root words, you will see "per" and "cent". Cent is an old European word of French, Latin and Italian origin meaning "hundred".

Percentage means "for every 100" or "out of 100". The symbol (%) as a quick way to write a fraction with a denominator of 100. For example, instead of saying "it rained 14 days out of every 100", we say "it rained 14% of the time".

Percentage is divided by 100. Dividing by 100 moves the decimal point with two positions to the left: 24% = 24/100 = 0.24 Changing a number to the percentage value requires opposite operations - multiply by 100 or move the decimal point by two positions to the right: 0.32 * 100 = 32% What do you get if you divide your height by 8? What is the percentage gain on "pecans"? 

Example of percentage calculations The following two examples show how percentages are calculated. 

1. 12 people out of a total of 25 were women. What percentage of women did they represent? - we use the simple rule of three, the total representing 100% - if 100% …………… .25 x% …………… ..12 x = (12 * 100) / 25 = 48% 

2. The price of a candy of 1.50 monetary units is increased by 20%. What is the new price? - it is calculated first of all by how many monetary units the candy became more expensive: 1.5 * 20/100 = 0.3 - the old price is added by 0.3 monetary units, resulting: 1.5 + 0.3 = 1.80 monetary units the new price 

Frequent error finding percentage Because percentages are often considered part of a larger integer, there may be a tendency to divide instead of multiply when faced with a problem such as "find 35% of 80": (35/100) * 80 = 28 Understanding the percentage allows students to estimate to verify that their answer is reasonable. In this example, knowing that 35% is between a quarter and a half would mean that the answer should be somewhere between 20 and 40.

If you find this hard to calculate digitally or on a paper, you can use a website that calculates instantly the percentage, see address below percentagecalc.co Find 6 methods of percent calculation on the page depending by your needs.

20 Unexpected Uses for Percentage Calculator