All measurements are estimations, since it is not possible to measure anything with 100% accuracy, although some things can be measured with a very high degree of accuracy. There is always some limit to the significant digits with which a measurement can be made. You might measure the weight of your sample to the millionth of a gram, or conceivably to an even higher degree of accuracy if the experiment requires it, but you cannot measure it to the last atom. There is a limit to even the finest scale.
when is the estimation of product is a useful tool
Estimation
very useful
individuals
scientific notation
I forgot
When a quick approximate answer will suffice.
no
give me examples of estimate
MRI is particularly useful for imaging the brain and spine, as well as the soft tissues of joints and the interior structure of bones.
Neither is particularly useful.
They are very useful to scientists because it helps them see stars and planets better