Question

How do you write 13/18 as a decimal?

Answer 1

`" "0.72bar2`

Explanation:

Calculators make things so much easier these days!

The shortcut way is to apply:`" "13-:18`

The calculator returns the answer 0.72222222

It looks as though the 2's go on forever (repeating).

There are several ways this can be shown and the one I chose is to put a 'bar' over the top of the repeating number or numbers.

In this case I would write it as:`" "0.72bar2`

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

`underline(" Units of count | Division | Remainder")`
`bar(" ")`
`underline("Units only"-> 13-: 18" "|" " 0" "| 13)`
`underline("Remainder as " 1/10"'s" ->130-:18" | " 7" | "4)`
`underline("Remainder as "1/100"'s"->40-:18" | "2" | "4`
`underline("Remainder as "1/1000"'s"->40-:18" | "`

`color(red)("The 2's are definitely repeating")`