Ctrl Combination Shortcut keys

 Switches between worksheet tabs, from left to right (Ctrl + PgDn )

Switches between worksheet tabs, from right to left (Ctrl + PgUp )

Applies the outline border to the selected Cells (Ctrl + Shift + & )

Removes the outlin border from the selected cells (Ctrl + Shift + _ )

Applies the genereal number format (Ctrl + Shift +  )

Applies the currency format with two decimal places (negative numbers in parentheses ) (Ctrl +Shift+$)

Applies the percentage format with no decimal places (Ctrl + Shift + % )

Applies the scientific number format with two decimal places (Ctrl + Shift + )

Applies the date format with the day, month, and year (Ctrl + Shift + # )

Applies the time format with the hour and minute, and AM or PM  (Ctrl + Shift + @ )

Applies the number format with two decimal places, thousands separator and minus sign (−) for negative values (Ctrl + Shift + ! )

Selects the current region around the active cell (the data area enclosed by blank rows and blank columns )(Ctrl + Shift + *)

In a Pivot Table, it selects the entire Pivot Table report ( )

Enters the current time (Ctrl + Shift + : )

Copies the value from the cell above the active cell in the cell or the Formula Bar ( Ctrl + Shift + '') 

Displays the insert dialog box to insert blank cells (Ctrl + Shift + Plus (+))

Displays the Delete dialog box to delete the selected cells (Ctrl + Minus (−) ) 

Enters the current date (Ctrl + ; )

Alternates between displaying cell values and displaying formulas in the worksheet (Ctrl +`)

Copies a formula from the cell above the active cell into the cell or the formula bar (Ctrl +')

Displays the format Cells dialog box (Ctrl +1)

Applies or removes bold formatting  (Ctrl +2)

Applies or removes italic formatting (Ctrl +3)

Applies or removes underlining (Ctrl +4)

Applies or removes strikethrough (Ctrl +5)

Alternates between hiding and displaying objects (Ctrl +6)

Displays or hides the outline sympols (Ctrl +8)

Hides the selected rows (Ctrl +9)

Hides the selected columns (Ctrl +0)

Applies or removes bold formatting  (Ctrl +B)

Copies the selected cells (Ctrl +C)

Uses the fill down command to a copythe contents and format of the topmost cell of a selected range into the cells below (Ctrl +D)

Invoke Flash Fill to automatically recognize patterns in adjacent columns and fill the current column (Ctrl +E)

Displays the Find and Replace dialog box, with the find tab selected (Ctrl +F)

Shift + F5 also displays this tab, while Shift + F4 repeats the last Find action ( )

Ctrl +Shift + F Opens the Format Cells dialog vox with the Font tab selected ( )

Displays the Go To Dialog box ( Ctrl + G )

F5 also displays this dialog box ( )

Displays the find and replace dialog box, with the replace ta selected  (Ctrl + H)

Applies or removes italic Formatting  (Ctrl + I )

Displays the Insert Hyperlink dialog box for new Hyperlinks or the edit Hyperlinkdialog box for selected existing Hyperlinks  (Ctrl + K )

Displays the create Table dialog box  (Ctrl + L )

Creates a new, blank workbook ( Ctrl + N)

Displays the open dialog box to open or fund a file  (Ctrl + O )

Selects all Cells that contain comments (Ctrl + Shift + O  )

Displays the print tab in Microsoft Office Backstage view (Ctrl + P )

Opens the Format Cells dialog box with the Font tab selected (Ctrl + Shift + P )

Displays the Quick Analysis Options for your data when you have cells that contain that data selected  (Ctrl + Q )

Uses the Fill Right command to copy the contenrs and  format of the leftmost cell of a selected range into the cells to the right  (Ctrl + R )

Saves the active file with its current file name location and file format   (Ctrl + S )

Displays the create Table dialog box  (Ctrl + T )

Applies or removes underlining  Ctrl + Shift + U Switches between expanding and collapsing of the formula bar  (Ctrl + U )

Inserts the contents of the Clipboard at the insertion point and replaces any selection, Available only after you have cut or copied an object, text , or cell contents  (Ctrl + V )

Displays the paste Special dialog box, Available only after you have cut or copied an object, text, or cell contents on a worksheet or in another program  (Ctrl + Alt + V )

Closes the selected workbook window  (Ctrl + W )

Cuts the selected cells  (Ctrl + X )

Repeats the last command or action, if possible  (Ctrl + Y )

Uses the Undo command to reverse the last command or to delete the last entry that you typed  

(Ctrl + Z )