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SkillsDMC ©
Documentation
When performing any calculations you must keep
proper records as required by your workplace
policy and procedures. Keeping records will also
provide evidence of your results if you need to
refer to the calculation again. This will save time
in the future. When doing any calculations and
measurements, record these clearly so if you
need to consult them again you can immediately
understand what each one refers to.
A word on accuracy
It is very important to have a methodical
approach to getting measurements right by
checking your calculations and not rushing
what you are doing. Even the smallest mistake
can jeopardise accuracy, quality and efficiency,
and could end up being very costly. You should
confirm that your measurements are correct
before beginning any calculations.
Remember – measure twice, cut once.
Rounding off
Rounding is most commonly used to limit the
amount of decimal places. Instead of having a
long string of decimals places, you can get a
ballpark or general value.
This would be used when you need to get an
approximate value, maybe for the quote of
material or to get an idea of how much material
will be needed.
Rounding up
Usually you round up if a decimal place is greater
than five.
For example:
5.7 will be rounded up to 6
5.79 will be rounded up to 5.8
Rounding down
Usually you round down if a decimal place is
smaller than five.
For example:
5.4 will be rounded down to 5
5.73 will be rounded down to 5.7
Generally when you are taking measurements
you will not round off a number as this will
decrease accuracy.
Section 9