(we proved this when we said that 47/50 is equal to 94/100, if you want more proof, but them into a calculator and they both spit out. This is because percents can be written as fractions and because the fractions in the word problem must be equal. In cases like this you could use #/30 = 70/100. This is a good idea to use when you have something like 1/15 which is a mess to turn into #/100.Įventually you might start getting questions that ask you, 'If there are 30 kids in a class, and 70% of them are there, how many kids are present' This results in the fraction 94/100, multiply by 100, and we can 94%Īlternatively, you could've just divided 47 by 50 and multiplied by 100 and gotten the same result. Take the fraction 2/2, as it equals one, and multiply it by 47/50. Since we can only multiply something by 1 and have it be the same value as before, and any number over itself is equal to one, we can do as follows: Since percents are just #/100 in a different form, all you do is change the denominator to 100 then multiply by 100. You have the fraction 47/50, as only 47 of the whole is there. 025100= 2.5%Ģ/100 100= 2% (note that the 100 is divided by the 100, resulting in 21)īut what if you have a whole that is not 100? If I for instance have 50 people in a class and I want to find the percentage of people that are present, and 47 people are there and only 3 are absent I'd do as follows: If you have a decimal or a fraction and want to put it into a percentage form, just multiply by 100. 02 reads as 2 hundredths) I say will be as you have to do some work to convert to percents. 02 will be 2%) (as a side note, 2/100 or.

All a percent is is just a number over 100 in a different form.įor example: 2/100 will be 2%, as it is 2 out of 100.

Multiplying percentages calculator