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
Estimation
When a quick approximate answer will suffice.
give me examples of estimate
no
They are very useful to scientists because it helps them see stars and planets better
It creates a representation of something difficult to see.
MRI is particularly useful for imaging the brain and spine, as well as the soft tissues of joints and the interior structure of bones.