> "BrianW" hotmail.com> wrote in message
> news:f4543b56-25eb-4efb-ba6a-91d40de43698@k13g2000hse.googlegroups.com...

>> Quite. Perhaps we also should teach kids "alternative maths" e.g. 1+1
>> = 3. After all, just because something lacks mathematical support
>> doesn’t seem to me a sufficient reason to omit it from a maths lesson

>
> I was taught that 1+1 can equal 3 given sufficiently large values for one and
> a sufficiently small value of three. It was part of a lesson on rounding
> errors and has stuck with me ever since, so I tend to use what has since been
> classed as "excessive" levels of precision in equations, though it dose
> result in my answers tallying nicely with Excel.
>
>