Ctrl+S

Save a file

Ctrl+Q

Quit the application

F2

sets the current cell for editing

Ctrl+O

Opens the Load file dialog window

Ctrl+F3

Opens the Define Name dialog window

F4

Repeat the last action

Ctrl+G

Opens the Go to dialog window which allows you to jump to a specified cell

Ctrl+H

Opens the Search and Replace dialog where you can search through your spreadsheets for text strings and replace them with something else

Ctrl+F

Opens the Search Center

Ctrl+~

Formats the current selection as a 'General'

Ctrl+$

Formats the current selection with the default currency

Ctrl+#

Formats the current selection with default date style

Ctrl+^

Formats the current selection as superscript

Ctrl+@

Formats the current selection with the default time format

Ctrl+!

Formats the current selection as a number with 2 decimal places

Ctrl+&

Adds a thin border around the current selection

Ctrl+_

Formats the current selection as subscript

Ctrl+B

Toggles the boldness of the font in the current selection

Ctrl+I

Toggles the italics of the font in the current selection

Ctrl+U

Toggles single underlining of the current selection

Ctrl+5

Toggles strikethrough of the current selection