3.9
Well, honey, 678 is divisible by 1, 2, 3, 6, 113, 226, 339, and 678. So, take your pick! Just don't come crying to me if you pick the wrong one and end up with a remainder.
It is a decimal fraction.
They are dense in that between any two decimals you have another one. A much better way to think of it is that a decimal must be either rational or irrational. For example, .34 is certainly rational, but the decimal expansion of square root of 2 goes on forever and is irrational. So a decimal, being either one, must be dense in the reals.
A "Light year" is a distance. It's the distance light travels in one year, in vacuum.5,878,450,000,000 miles (rounded)9,460,450,000,000 kilometers (rounded)
It is already rounded to exactly that degree.
It is 44.3 when rounded to one decimal place
It is then 5.7 when rounded to one decimal place
978.229 rounded to one decimal place is 978.2
3.05 rounded to one decimal place is 3.1.
44.98 rounded to one decimal place is 45.0
13.3131 rounded to one decimal place = 13.3
1.13 rounded to one decimal place is 1.1
It is 60.0 rounded to one decimal place and not 59.9
10.27 rounded to one decimal place = 10.3
3.214 rounded to one decimal place is 3.2
0.086 rounded to one decimal place is 0.1.