Question

What is `20/30` as a decimal?

Answer 1

`0.67 " or " 0.667`

Explanation:

`30` cannot be multiplied to give a power of 10, so to find the decimal you have to divide:

`20/30 = 2/3 = 2div 3`

`2div3 = 0.666666666.....` It is a recurring decimal.

This is written as `0.dot6` or `0.bar6`

However it is not practical to use recurring decimals in calculations, so the decimal is usually rounded off to 2 or 3 decimal places depending on the accuracy required for the answer.

Answer 2

A = `2/3` `approx 0.66`

Explanation:

Simply simplify the fraction:

= `20/30`
= `2/3`

And then use a calculator or your brain to figure out what `2/3` is:

= `2/3`
`approx 0.66`

All the best!