To keep the others out, it's more about exclusion than clarity (it makes easy things seem hard). Also the word 'after' is a preposition.
Sometimes. Scientific notation is used to express very small or very large numbers. If the problem does not involve any such numbers then there is no need for scientific notation.
It is: 9.3*107 in scientific notation
It is scientific as is. i.e. no scientist would complicate this. However, you could add 4.8x100
Such numbers would not need to be written in scientific notation but if need be it is: 1.2345*10^2
1.48, in scientific notation is 1.48 but, if you really need to show that you have written it in scientific notation, you could write it as 1.48*100
Sometimes. Scientific notation is used to express very small or very large numbers. If the problem does not involve any such numbers then there is no need for scientific notation.
Medical.
You do not simply calculate scientific notation for nothing. You need a number for which you calculate the scientific notation.
scientific notation
It is: 9.3*107 in scientific notation
You don't need to do anything. It is in scientific notation.
It is scientific as is. i.e. no scientist would complicate this. However, you could add 4.8x100
Such numbers would not need to be written in scientific notation but if need be it is: 1.2345*10^2
1.48, in scientific notation is 1.48 but, if you really need to show that you have written it in scientific notation, you could write it as 1.48*100
Using scientific notation reduces the need to write out very large or very small numbers as the following examples show:- 1,000,000,000,000 = 1.0*1012 in scientific notation 0.0000000001 = 1.0*10-10 in scientific notation
830 would not normally need be written in scientific notation. However, it would be 8.3x102
Johnny Hammil is a renound scientist, and he knows that it is noted down as 3.786757565475658565846585464345372