You can use the shift & cntl and down arrow keys
If you had a 1 in A1 and a 5 in A10. To copy the 1 to rows 2 to 9 you can
do the following
1) Click on cell A1 and copy
2) Click on cell A2. Press shift and Cntl and then down arrow. A2 to A10
will be highlighted.
3) Release Cntl and down arrow while still holding the Shift. Now press up
arrow. A2 to A9 will be highlighted.
4) Perform a Paste (Cntl - V or use edit menu)