How we use a mouse with key board?

How we use a mouse with key board?

1) open the start nenu.
2) click on control penal.
3) Then click on Ease of access center.
4) click make the mouse easier to use. 
5) select the turn on mouse keys.

  To move the mouse pointer:

Option	Description
With a numeric keypad:	Use the 7, 8, 9, 4, 6, 1, 2, 3 keys on the keypad.
With the keyboard:	Use the 7, 8, 9, U, O, J, K, L keys.

  To click a mouse button:

Option	Description
With a numeric keypad:	Press 5 on the keypad.
With the keyboard:	Press I.

  To press and hold the mouse button:

Option	Description
With a numeric keypad:	Press 0 (zero) on the keypad.
With the keyboard:	Press M.

  To release the mouse button:

Option	Description
With a numeric keypad:	Press “.” (period) on the keypad.
With the keyboard:	Press “.” (period).

Alternative Method: Hold the "alt key", "Shift key" and press the numb lock.
Alt+Shift+Numb lock