Question

How do you change -1/2 into a decimal?

Answer 1

`-1/2=-0.5`

Explanation:

You can do this through division; `-1/2` is actually just a division problem:

`-1/2=-1÷2=-0.5`

Answer 2

See explanation

Explanation:

A decimal is another way to write a fraction whose denominator is a power of `10`, so if you want to change a fraction to decimal first thing is to see if you can reduce or expand the fraction to get such denominator:

In this case to get a deniminator of `10` you only have to multiply numerator and denominator by `5`

`-1/2=-(1*color(red)(5))/(2*color(red)(5))=-5/10=-0.5`

However this method does not always work. A method that works for every fraction is to calculete the long division of numerator and denominator to see if the decimal is finite. For example:

2:3=0.666...
0

---

20
18

---

=20
18

---

 20
 ....