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### Course: 6th grade>Unit 3

Lesson 5: Percent problems

# Finding a percent

Discover how to calculate percentages with this simple method. First, write the problem as a fraction, then simplify it. Next, convert the fraction to a percentage by making the denominator 100. Alternatively, divide the numbers to get a decimal and multiply by 100 to find the percentage. Master this skill for everyday use. Created by Sal Khan.

## Want to join the conversation?

• could a percent go over 100
• It can, yes. If you get extra credit on a test, the score could go over 100%, for example. If something is too big to fit into something, you could say it takes up 110% of the box, but that is a bit figurative.
• 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?
• 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.
• how do you find 111 is what percent of 300
• Divide: 111/300
And, multiply by 100.
In other words: 111/300 * 100/1 = the percent that you want
See if you can finish the math.
• math should solve their own problem, this is hard
• what if you keep adding 0s but you can't get a remainder or answer?
• 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!
• This video doesn't help with the questions at ALL! I struggled with the questions so much! It seriously didn't help. Some of the questions didn't use the same methods which just made it harder. Didn't help at all...
• I agree
(1 vote)
• can you try to explain more
• like the teacher said in the video you can use one forth of 16 as an example and use that. After you multiply it by twenty-five and that gives you 25/100 because four is a 4th of sixteen aka a 25th of one hundred. Another problem is 5/10 what is the percentage of the five? Well multiplying the by 5 and 10 by 10 you get 50/100 aka one half of one hundred.
(1 vote)
• I'm having trouble understanding word problems. How did they get the fraction 4/16 from the question?