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### Improper Fractions

```Date: 05/20/2002 at 05:42:56
From: Dana
Subject: Fractions

Dear doctors,

My math teacher says that we read 14/9 as "fourteen ninths", but
I think we should read it as "fourteen over nine" because the 14
can't be a part of nine parts.

And do we have a fraction called "six halves"? If yes, how do we
write it?

```

```
Date: 05/20/2002 at 12:11:01
From: Doctor Peterson
Subject: Re: fractions

Hi, Dana.

In everyday speech, we think of a fraction as something less than
one. If I said "a fraction of my coworkers were laid off today", I
would mean a small part; if I said "a fraction of a percent of
students understand the meaning of this word", I would mean less than
one percent. But the root meaning of the word "fraction" is just
"broken"; mathematically, a fraction can be made up of any number of
pieces, even if, together, they make up more than a whole.

Just imagine taking a bunch of pizzas and cutting each of them into
eight parts. Now I might eat three of them myself, so I've eaten
three eighths: 3/8 of a pizza. But someone else might take 21 pieces
for his family of seven; he's taken 21 eighths, which is the fraction
21/8. Do you see that it really makes just as much sense to read this
fraction as "twenty-one eighths", even though it is not part of just
one pizza?

Similarly, if I cut three apples in half, I would have six halves,
which we can write as 6/2.

Certainly there is a good reason for preferring, in many situations,
to rewrite such an improper fraction as a mixed number, so that the
fractional part is less than one as we expect; we call these
fractions "improper" just because they do feel "wrong" to us. But
since improper fractions still make sense, and are very useful in
many situations, it is correct to read them the same way we read
proper fractions.

- Doctor Peterson, The Math Forum
http://mathforum.org/dr.math/
```
Associated Topics:
Elementary Fractions
Middle School Fractions

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