Christopher V. answered • 10/03/12

Middle school and lower math and science tutor

think of it this way 1/5 is =2/10 and 1/2 is =5/10 and so 1/5 would be closer to **0** than 1/2 or 1

Giselle C.

asked • 10/03/12I want to know how this is rounded.

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Christopher V. answered • 10/03/12

Tutor

New to Wyzant
Middle school and lower math and science tutor

think of it this way 1/5 is =2/10 and 1/2 is =5/10 and so 1/5 would be closer to **0** than 1/2 or 1

Kathye P. answered • 10/03/12

Tutor

5.0
(150)
Math Geek, passionate about teaching

Hi, Giselle.

I think it would be easier to work in decimal numbers in order to compare these.

A fraction is another way to write a division problem; the numerator (top number) is divided by the denominator (bottom number). To change a fraction to a decimal, we do the division:

____

5 ) 1 (That is supposed to be in long division format!)

So how do you divide into 1? Remember that it is a whole number, and that we can write a decimal behind it with one or more zeros without changing it, for example, $1 is the same as $1.00

_0.2_

5 ) 1.0

-1 0

0

So doing that and dividing, we get an answer of **0.2 **(This decimal ends so there is no rounding needed). To make it easier to compare it to 0, 1/2 and 1 we could rewrite those in decimal form as well.

0 ---> 0.0

1/2 ---> 0.5

1 ---> 1.0

You may be able to tell now which number is closest to 1/5 (remember that it is equal to 0.2), but you can also put these on a number line, by dividing the space between 0 and 1 into tenths:

-|------|------|------|------|------|------|------|------|------|------|-

**0** 0.1 **0.2** 0.3 0.4 **0.5** 0.6 0.7 0.8 0.9 **1**

Hope this helps!

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