Extend selection of a character to left

`Shift` + `Left Arrow`

All hotkeys for Apple Numbers (MacOS)

Formatting and Editing Shortcuts Display font panel	`Command` + `T` +
Formatting and Editing Shortcuts Bold	`Command` + `B`
Formatting and Editing Shortcuts Italic	`Command` + `I`
Formatting and Editing Shortcuts Underline	`Command` + `U`
Formatting and Editing Shortcuts Font Zoom in/Zoom out	`Command` + `+` / `Command` + `-`
Formatting and Editing Shortcuts Align text left	`Command` + `{`
Formatting and Editing Shortcuts Align text right	`Command` + `}`
Formatting and Editing Shortcuts Align text justify	`Command` + `Option` + `\|`
Formatting and Editing Shortcuts Delete previous character	`Del`
Formatting and Editing Shortcuts Delete next character	`Del forward`
Formatting and Editing Shortcuts Superscript	`Ctrl` + `Command` + `+`
Formatting and Editing Shortcuts Subscript	`Ctrl` + `Command` + `-`
Formatting and Editing Shortcuts Edit Hyperlink without disabling	`Arrow Keys`
Formatting and Editing Shortcuts Copy/Cut/Paste	`Command` + `C` / `Command` + `X` / `Command` + `V`
Formatting and Editing Shortcuts Paste and match formatting with destintion text	`Command` + `Option` + `Shift` + `V`
Formatting and Editing Shortcuts Insert paragraph break	`Return`
Formatting and Editing Shortcuts Insert nonbreaking space	`Option` + `Spacebar`
Formatting and Editing Shortcuts Insert line break	`Shift` + `Return` / `Ctrl` + `Return`
General Shortcuts New spreadsheet	`Command` + `N`
General Shortcuts Open template chooser	`Command` + `Shift` + `N`
General Shortcuts Save spreadsheet	`Command` + `S`
General Shortcuts Open existing spreadsheet	`Command` + `O`
General Shortcuts Save as	`Command` + `Shift` + `S`
General Shortcuts Print selected spreadsheet	`Command` + `P`
General Shortcuts Find	`Command` + `F`
General Shortcuts Find next	`Command` + `G`
General Shortcuts Find previous	`Command` + `Shift` + `G`
General Shortcuts Use selection for find	`Command` + `E`
General Shortcuts Scroll to find selection	`Command` + `J`
General Shortcuts Spelling check	`Command` + `;`
General Shortcuts Spelling window	`Command` + `:`
General Shortcuts Zoom in	`Command` + `>`
General Shortcuts Close window	`Command` + `W`
General Shortcuts Minimize window	`Command` + `M`
General Shortcuts Show preferences	`Command` + `,`
General Shortcuts Show inspector window	`Command` + `Option` + `I`
General Shortcuts Show document rulers	`Command` + `R`
General Shortcuts Display layout	`Shift` + `Command` + `L`
General Shortcuts Close numbers	`Command` + `Q`
General Shortcuts Hide other windows	`Command` + `Option` + `H`
General Shortcuts Hide numbers	`Command` + `H`
General Shortcuts Show colors window	`Command` + `Shift` + `C`
Navigation Shortcuts Scroll one screen up	`PgUp`
Navigation Shortcuts Scroll one screen down	`PgDn`
Navigation Shortcuts Scroll one screen left	`Option` + `PgUp`
Navigation Shortcuts Scroll one screen right	`Option` + `PgDn`
Navigation Shortcuts Go to beginning of spreadsheet	`Home`
Navigation Shortcuts Go to end of spreadsheet	`End`
Navigation Shortcuts Go to previous spreadsheet	`Command` + `PgUp`
Navigation Shortcuts Go to next spreadsheet	`Command` + `PgDn`
Navigation Shortcuts Go to previous sheet if selected in sheets pane	`Left Arrow` / `Up Arrow`
Navigation Shortcuts Go to next sheet if selected in sheets pane	`Right Arrow` / `Down Arrow`
Moving Around Text Move around characters	`Arrow Keys`
Moving Around Text Move to beginning of current/previous word	`Option` + `Left Arrow`
Moving Around Text Move to end of current/next word	`Option` + `Right Arrow`
Moving Around Text Move to beginning of line	`Command` + `Left Arrow`
Moving Around Text Move to end of line	`Command` + `Right Arrow`
Moving Around Text Move to beginning of paragraph	`Option` + `Up Arrow`
Moving Around Text Move to end of paragraph	`Option` + `Down Arrow`
Text Selection Select All	`Command` + `A`
Text Selection Select a word	`Double Click`
Text Selection Select a paragraph	`Triple Click`
Text Selection Extend selection of a character to left	`Shift` + `Left Arrow`
Text Selection Extend selection of a character to right	`Shift` + `Right Arrow`
Text Selection Select characters	`Click` + `Drag across character`
Text Selection Select text between the Click locations	`Click` and `Shift` + `Click at other location`
Text Selection Extend selection to end of current word	`Shift` + `Option` + `Right Arrow`
Text Selection Extend selection to beginning of current word	`Shift` + `Option` + `Left Arrow`
Text Selection Extend selection to end of current line	`Shift` + `Command` + `Right Arrow`
Text Selection Extend selection to beginning of current line	`Shift` + `Command` + `Left Arrow`
Text Selection Extend selection to the line above	`Shift` + `Up Arrow`
Text Selection Extend selection to the line below	`Shift` + `Down Arrow`
Text Selection Extend selection to end of text	`Shift` + `Command` + `Down Arrow` / `Shift` + `End`
Text Selection Extend selection to beginning of text	`Shift` + `Command` + `Up Arrow` / `Shift` + `Home`
Object Manipulation Draw Shapes	`Option` + `Click Shapes`
Object Manipulation Draw Charts	`Option` + `Click Charts`
Object Manipulation Select all object	`Select one object` and `Command` + `A`
Object Manipulation Deselect all object	`Select one object` and `Command` + `Shift` + `A`
Object Manipulation Move object one point	`Arrow Keys`
Object Manipulation Move Object ten points	`Shift` + `Arrow Keys`
Object Manipulation Select additional objects	`Command` + `Click`
Object Manipulation Deselect additional objects	`Shift` + `Click`
Object Manipulation Group objects	`Option` + `Command` + `G`
Object Manipulation Ungroup objects	`Object` + `Shift` + `Command` + `G`
Object Manipulation Lock objects	`Command` + `L`
Object Manipulation Unlock objects	`Option` + `Command` + `L`
Object Manipulation Duplicate objects	`Command` + `D`
Object Manipulation Resize object	`Drag`
Object Manipulation Resize from center	`Option` + `Drag`
Object Manipulation Rotate	`Command` + `Drag`
Object Manipulation Rotate 45 degree	`Command` + `Shift` + `Drag`
Object Manipulation Mask/Unmask objects	`Command` + `Shift` + `M`
Object Manipulation Exit mask mode	`Return`
Object Manipulation Open shortcut menu for selected item	`Ctrl` + `Click`
Object Manipulation Exit text edit mode	`Command` + `Return`
Table Editing Select all cell contents	`Select a cell` and `Command` + `A`
Table Editing Select all cell border	`Select a border` and `Command` + `A`
Table Editing Delete selected table contents	`Del`
Table Editing Select cell	`Click cell`
Table Editing Select next cell	`Tab`
Table Editing Select previous cell	`Shift` + `Tab`
Table Editing Stop editing cells and select table	`Command` + `Return`
Table Editing Insert a tab when editing cell	`Option` + `Tab`
Table Editing Open table formatting menu	`Ctrl` + `Click`
Table Editing Open formula editor to edit a formula	`Double Click cell`