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Estimation!
Can you please help me out with this. I would really appreciate it.
Use estimation by rounding. Do not find exact value. Estimate the cost of new carpeting that costs $28.57 per square yard, if you want to carpet a room that is 14.7 square yards in size.
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The idea behind estimating is to have an idea of what something is going to cost or what it is going to take to accomplish something. In your example you would or should round both numbers up or both numbers down to an even dollar figure, or one up and one down.
If I wanted to estimate the cost of this carpet for purchase for myself. I would round the dollars down to $28.00 and the yardage up to 15 as this would be the easiest way to estimate in my head and get close to the real number.
If I wanted to make sure my estimate would be over the actual cost including taxes; I would raise the cost to $30.00 and the yardage to 15 or even 16 yards.
The object of estimating is to come close or get a ball park figure for certain purposes. In your example the purpose is most likely to find out the affordability of this carpet.
$28.00 x 15 = $420.00
$30.00 x 16 = $480.00
Actual cost of the carpet
$28.57 x 14.57 = $419.98
As you can see the first example given was the closest estimate to actual cost. Where I live we have a 6% sales tax.
$419.98 x 6% = $445.18
The second example I used was much higher than the actual cost including sales tax but it did give me the ability to judge if this purchase was affordable.
This is the purpose behind an estimate to judge affordability or if in some cases as in an engineering study if something is doable.
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You really should be doing your own homework. Hence the term 'HOMEwork' and not 'GoOnTheInternetAndFindTheAnswerThusLeadingToAGenerationOfYoungPeopleWhoCannotThinkForThemSelvesWork'
Its pretty straight forward though. The logic behind it, is not to calculate $28.57 x 14.7, but instead either:
$29 x 15
$30 x 15
I say the most straightforward and obvious calculation is:
$30 x 15
I shan't give you the answer, its pretty easy now.
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