How do you round 45670 and in scientific notation?
45670 would be 4.567 x 104 in scientific notation because the trailing zero is not significant without a decimal point.
How do you write 37.000 in scientific notation?
You would write 37.000 in scientific notation like this 3.7e5 or 3.7*10^5. Assuming you mean 37,000.
Which is the best exponential notation for (xy) (xy) (xy)?
The answer depends on whether xy are commutative numbers or operators in a permutation group.
What is 1 milligram scientice notation?
I assume you mean as an expression of a gram. A milligram is 0.001 grams. This is 1x10^-3 in scientific notation.