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Finding a percent

Percent means per-hundred.  Use that knowledge to solve problems like what percent of 16 is 4? Created by Sal Khan.

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  • male robot hal style avatar for user Hank SR.
    could a percent go over 100
    (46 votes)
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  • hopper cool style avatar for user Nicole Dragavon
    I'm confused on this problem. "Jordan takes 50% of the cherries from a bowl. Then Mei takes 50% of the remaining cherries. Finally, Greg takes 50% of the remaining cherries. There are 3 cherries left. How many cherries were in the bowl before Jordan arrived?" Can I get help on this please?
    (2 votes)
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    • primosaur seed style avatar for user Ian Pulizzotto
      Each time someone takes 50% (or half) of the remaining cherries, the other half of them are left.

      1/2 of the original number of cherries are left, just after Jordan takes the cherries.

      (1/2)(1/2)=1/4 of the original number of cherries are left, just after Mei takes the cherries.

      (1/2)(1/4)=1/8 of the original number of cherries are left, just after Greg takes the cherries.

      Since there are now 3 cherries left, there were originally 3*8=24 cherries. The answer is 24.
      (27 votes)
  • starky seedling style avatar for user jaydanjoell4738
    what if you keep adding 0s but you can't get a remainder or answer?
    (3 votes)
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    • mr pants orange style avatar for user P7 Logan, Aaron
      The only way this would happen is if it is a infinite repeating number like pi or 3/7. Both of these numbers will never end no matter how much decimal places you move with the 0. These numbers can be confusing. To limit this, round to the ones, tens, hundreds, or thousandths to prevent repeating digits.

      Hope this helps!
      (14 votes)
  • blobby green style avatar for user Justice Burks
    how do you find 111 is what percent of 300
    (6 votes)
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  • orange juice squid orange style avatar for user fanwar21
    can you try to explain more
    (7 votes)
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  • blobby green style avatar for user sugarbaby_rastachick
    I'm having trouble understanding word problems. How did they get the fraction 4/16 from the question?
    (5 votes)
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  • mr pants pink style avatar for user ccordova-ramirez2025
    im confused about how to divide the whole thing
    (5 votes)
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  • mr pants pink style avatar for user iyana.zaidi
    Um i am really confused and i don't get percents at all can someone help me understand
    (0 votes)
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    • eggleston yellow style avatar for user ii_RoNy_07
      Hello,🌻🤍

      1️⃣-The definition of a percent is a fraction over 100. So, 34/100 is the same as 34%. A trick here will help you remember:
      -% has 1 line and 2 zeroes; so if u make the line straight and add the circles/zeroes, it will look like 100. *Hope that helps you remember that!

      2️⃣-Next, how to FIND a percent...

      ⏩Example {FRACTIONS} : 14/50 --> What do you do then? Here:
      -You should try to make the denominator to be 100. So, ask yourself, what number I multiply by 50 gives me a hundred? Yes, it's 2. So, just multiply both 14 and 50 by 2, and it will be: 28/100 and as I mentioned, 28/100 is the same as 28%, and there you have it.

      ⏩Example {DECIMALS}: This is easy... 0.89. How do you turn it into a percent? Here:
      -Simply, the number after the decimal is the percent. So simply:- it's 89%. But here's another way:📜
      -Turn 0.89 to a fraction. How? Put the decimal digits above 10 or 100, how do you know which? If there's ONE decimal digit, it's over 10 // If there's 2, put it over 100. So, 89/100 which is 89% :D. 🤓

      Hope I got to your point!🌻😊 #YouCanLearnAnything.💪

      ~Wonder Woman 🤍(^◡^)🌻
      (10 votes)
  • male robot donald style avatar for user Carson Volk
    So, you simplify the percentage's fraction, then make it over 100? Then that's more or less your answer?
    (5 votes)
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  • starky ultimate style avatar for user Piper McLean ΩΔΑ
    I'M CONFUSED can someone help me understand?
    (3 votes)
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    • female robot grace style avatar for user shrishri
      Hello,🌻🤍

      1️⃣-The definition of a percent is a fraction over 100. So, 34/100 is the same as 34%. A trick here will help you remember:
      -% has 1 line and 2 zeroes; so if u make the line straight and add the circles/zeroes, it will look like 100. *Hope that helps you remember that!

      2️⃣-Next, how to FIND a percent...

      ⏩Example {FRACTIONS} : 14/50 --> What do you do then? Here:
      -You should try to make the denominator to be 100. So, ask yourself, what number I multiply by 50 gives me a hundred? Yes, it's 2. So, just multiply both 14 and 50 by 2, and it will be: 28/100 and as I mentioned, 28/100 is the same as 28%, and there you have it.

      ⏩Example {DECIMALS}: This is easy... 0.89. How do you turn it into a percent? Here:
      -Simply, the number after the decimal is the percent. So simply:- it's 89%. But here's another way:📜
      -Turn 0.89 to a fraction. How? Put the decimal digits above 10 or 100, how do you know which? If there's ONE decimal digit, it's over 10 // If there's 2, put it over 100. So, 89/100 which is 89% :D. 🤓

      Hope I got to your point!🌻😊 #YouCanLearnAnything.💪

      ~Wonder Woman 🤍(^◡^)🌻

      THIS IS NOT MY EXPLANATION SOMEONE ELSE DID THIS REALLY AMAZING EXPLANATION! AL CREDITS TO THAT PERSON
      HER USERNAME IS 🌸»Cherries«🌸
      (4 votes)

Video transcript

Let's give ourselves a little bit of practice with percentages. So let's ask ourselves, what percent of-- I don't know, let's say what percent of 16 is 4? And I encourage you to pause this video and to try it out yourself. So when you're saying what percent of 16 is 4, percent is another way of saying, what fraction of 16 is 4? And we just need to write it as a percent, as per 100. So if you said what fraction of 16 is 4, you would say, well, look, this is the same thing as 4/16, which is the same thing as 1/4. But this is saying what fraction 4 is of 16. You'd say, well, 4 is 1/4 of 16. But that still doesn't answer our question. What percent? So in order to write this as a percent, we literally have to write it as something over 100. Percent literally means "per cent." The word "cent" you know from cents and century. It relates to the number 100. So it's per 100. So you could say, well, this is going to be equal to question mark over 100, the part of 100. And there's a bunch of ways that you could think about this. You could say, well, look, if in the denominator to go from 4 to 100, I have to multiply by 25. In the numerator to go from-- I need to also multiply by 25 in order to have an equivalent fraction. So I'm also going to multiply by 25. So 1/4 is the same thing as 25/100. And another way of saying 25/100 is this is 25 per 100, or 25%. So this is equal to 25%. Now, there's a couple of other ways you could have thought about it. You could have said well, 4/16, this is literally 4 divided by 16. Well, let me just do the division and convert to a decimal, which is very easy to convert to a percentage. So let's try to actually do this division right over here. So we're going to literally divide 4 by 16. Now, 16 goes into 4 zero times. 0 times 16 is 0. You subtract, and you get a 4. And we're not satisfied just having this remainder. We want to keep adding zeroes to get a decimal answer right over here. So let's put a decimal right over here. We're going into the tenths place. And let's throw some zeroes right over here. The decimal makes sure we keep track of the fact that we are now in the tenths, and in the hundredths, and in the thousandths place if we have to go that far. But let's bring another 0 down. 16 goes into 40 two times. 2 times 16 is 32. If you subtract, you get 8. And you could bring down another 0. And we have 16 goes into 80. Let's see, 16 goes into 80 five times. 5 times 16 is 80. You subtract, you have no remainder, and you're done. 4/16 is the same thing as 0.25. Now, 0.25 is the same thing as twenty-five hundredths. Or, this is the same thing as 25/100, which is the same thing as 25%.