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It is because in most instance people are do nor need nor are they interested in the detailed number.
The number pi has been calculated to over a trillion digits but with just 40 digits, you can measure an angle subtended by a hydrogen atom at the far end of the known universe! The additional digits are fun for mathematicians but are of no practical use.
If asked for my height I will say 1.78 metres. I doubt if anyone is interested in the number at the third decimal place (millimetres) or at greater detail. Moreover, my height is not constant: over the course of a day I shrink by approx 1.5 cm as my spine settles but regain that height when I sleep. So the accuracy of any measurement given to more than 2 decimal places (in metres) is spurious.
There are also other practical applications. Unit prices are usually rounded to 2 decimal places because that is the normal relationship between the major and minor currency unit. So 2 cans for 75 cents is 37 or 38 cents per can - never 37.5 cents.
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∙ 9y ago
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What is estimating NOT as helpful when multiplying very small numbers?
It is - if you use appropriate rounding. Rounding does not have to be to whole numbers.
What is 19.76485 rounded?
20 rounding units. 20.0 rounding tenths 19.8 rounding hundredths 19.76 rounding thousandths 19.765 rounding tenthousandths 19.7649 rounding hundred thousandths
What does 1.726 round to?
If you are rounding to 100ths it is 1.73 . If you are rounding to 10ths it is 1.7 . If you are rounding to integers it is 2 .
How is rounding to nearest tens similar to rounding to the nearest thousand?
The process of rounding is the same no matter what place you're rounding to.
What is the greatest possible whole number that can be rounded off to 600?
-- If rounding to the nearest 300, then 749 is. -- If rounding to the nearest 200, then 699 is. -- If rounding to the nearest 150, then 674 is. -- If rounding to the nearest hundred, then 649 is. -- If rounding to the nearest twenty, then 609 is. -- If rounding to the nearest ten, then 604 is.
Who invented rounding to whole numbers?
Bob Sinclar invented rounding. :) Hope this was helpful. :]
What is estimating NOT as helpful when multiplying very small numbers?
It is - if you use appropriate rounding. Rounding does not have to be to whole numbers.
When is estimating helpful?
because it is helpful so u can round to finds answer also a lot people like rounding.
What is 19.76485 rounded?
20 rounding units. 20.0 rounding tenths 19.8 rounding hundredths 19.76 rounding thousandths 19.765 rounding tenthousandths 19.7649 rounding hundred thousandths
What does 84651 round to?
It depends on what you are rounding by. If you are rounding by ten-thousands=80000 If you are rounding by thousands=85000 If you are rounding by hundreds=84700 If you are rounding by tens=84650
What is 6.324 rounded to two decimal places?
That depends on how you are rounding: Rounding up = 6.33 Rounding down = 6.32 Rounding nearest = 6.32
What would you round 415 to?
That would depend on what you were rounding it to. If rounding to the nearest whole number, then it does not need rounding. If rounding to the nearest ten, it would be 420. If rounding to the nearest hundred, it would be 400.
What is Von Neumann rounding?
Rounding to odd.
What is rounding an example of?
rounding is an example of a guess .
What is 4.409603136 rounding it?
Depends on where you are rounding it to.4.4096031364.409603144.40960314.4096034.409604.40964.4104.414.44.
What does 1.726 round to?
If you are rounding to 100ths it is 1.73 . If you are rounding to 10ths it is 1.7 . If you are rounding to integers it is 2 .
How do you estimate 3444 times 670 with rounding?
You can calculate 3444 times 670 without rounding or you can estimate it WITH rounding. But you cannot estimate it without rounding.
