Apple - Mac Dictation - How to select backspace?

Solution 1: You can say "Press backspace key" (at least with 10.10).

Solution 2: You can define the voice command "backspace" that triggers an automator workflow that sends a delete keystroke:

on run {input, parameters}

tell application "System Events"
    keystroke (ASCII character 127)
end tell

return input
 end run

Solution 3: You can use BetterTouchTool (free):

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