Division ProblemDate: 12 Jul 1995 12:05:57 -0400 From: Chris Santini Subject: division Question: What is eighty divided by one hundred? Date: 13 Jul 1995 22:54:01 -0400 From: Dr. Ken Subject: Re: division Hello there! To do division, we can write the two numbers on top of each other, like this: 80 ---- 100 When we write division like this, we can check to see whether there are any numbers that divide both the top (numerator) and the bottom (denominator). In this case, we can see from the "0" at the end of both the 80 and the 100 that 10 divides both numbers. When that happens, we can get rid of it in both the top and the bottom by dividing by it. We're left with: 8 --- 10 Are there any more factors? Yup. Both of the numbers are divisible by 2. So let's divide both of them by 2. We get: 4 --- 5 Four fifths! One answer to your question is that 80 divided by 100 is four fifths. Another way of writing four fifths is .8, and the way you say that is either "point eight" or "eight tenths." Notice that the fraction we had before we got four fifths was eight tenths. Pretty neat, huh? -K |
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