Expert answers to "How do you change -1/2 into a decimal?"

garnentas3m

Answered question

2021-12-28

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

Answer & Explanation

boronganfh

Beginner2021-12-29Added 33 answers

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

- \frac{12}{=} - \frac{1 \cdot 5}{2 \cdot 5} = - \frac{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 \dots

Stella Calderon

Beginner2021-12-30Added 35 answers

You can do this through division;

- \frac{12}{}

is actually just a division problem:

- \frac{12}{=} - 1 \div 2 = - 0.5

nick1337

Expert2022-01-08Added 777 answers

I got it. thanks

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