Estimating is not as helpful when multiplying very small numbers because the numbers aare very easy to answer
When multiplying, the key point is not to round to an integer but to use significant figures. So the estimate for any number with only one significant figure is that number - including any leading or trailing 0s. Thus the estimate for 0.007 is 0.007 not 0. The estimate for 0.053 could be 0.05 or 0.055 depending on the other number(s) in the product.
64
It separates the numbers
Very small or very large numbers.
7 is a prime number and is also too small to have any numbers evenly divided into it.
It is not as helpful when multiplying very small numbers because the numbers are going to be very east to answer. That is why estimating is not as helpful when multiplying very small numbers.
It is - if you use appropriate rounding. Rounding does not have to be to whole numbers.
sampling
It's easy... All you do is act like your multiplying small numbers
Multiplying numbers in scientific notation is easier when the numbers are very, very large or very, very small. Multiplying 0.000000000385 x 0.0000000474 is a pain. Multiplying 3.85 x 10-10 x 4.74 x 10-8 is not.
They are predatory..They keep numbers of small fish down to acceptable levels.
It helps in computing very large or very small numbers.
Because of the very large (and sometimes very small) numbers involved.Because of the very large (and sometimes very small) numbers involved.Because of the very large (and sometimes very small) numbers involved.Because of the very large (and sometimes very small) numbers involved.
That is not what mathematicians mean by an irrational number, which is a number with an infinitely long decimal expansion. You will note that since division is the inverse of multiplication, dividing by small numbers has the same effect as multiplying by large numbers, and so dividing by zero, which is an infinitely small number, is equivalent to multiplying by infinity. The result in most cases is deemed to have no mathematical meaning.
Asumming you mean estimating software for various contracting jobs, it can help you by giving you a ballpark figure of what to charge for the job.
sampling
This is easiest to understand using small numbers and the X,Y grid using the negative numbers to the left of 0 and positive to the right. By following the normal rules of multiplication, multiplying a negative number by a positive number moves the product further to the left from zero.