Approximately 52,503,904
32 (16 to a pint ... a pint is a pound the whole world round).
3
2 Half steps
Ten whole numbers round to 50, if you include 50 itself which requires no rounding.
The World Is Round has 447 pages.
2
5
The answer depends on how many digits you wish to round to.
Rounding a number typically involves three main steps: identifying the digit at the place value you want to round to, looking at the digit immediately to the right, and deciding whether to round up or down based on that digit. If the right-hand digit is 5 or greater, you round up; if it's less than 5, you round down. Finally, replace all digits to the right of the rounded digit with zeros (for whole numbers) or remove them (for decimals).
Four half steps, or two whole steps.
I'm not sure exactly what you mean by how many steps but I can explain a whole tone scale for you. A whole tone scale is comprised of all whole steps. For example: A B C# D# F G A or Bb C D E F# G# A# (which is Bb) So I guess there are 7 notes in the whole tone scale if that was what you were looking for.
There was 2007 steps