You already spelled it. O-P-E-R-A-T-E-D
Operation
That is the correct spelling of "starting" (beginning, or engaging a machine operation).
The correct spelling is "multiplication" (arithmetic operation to combine many equal sets).
The correct spelling (past tense of the verb to operate) is operated.
The likely word is "bureaucracy" (the officious, convoluted operation of governments).
There are a couple of likely possibilities:definition - the meaning of a word, or the sharpness of an imagedifferentiation - a mathematical operation, especially calculus
The spelling is operation (activity, or surgery).
The correct spelling is "procedure" (an operation or process).
The correct spelling is multiplication (a number operation, or propagation).
The likely word is maintenance (operation and repair function).
The correct spelling is established (founded or put into operation).
This is likely the word equals (peers, or the result of a math operation).
The correct spelling is "instructions" (orders, or details on operation and use).
That is the correct spelling of "starting" (beginning, or engaging a machine operation).
Not having to spell the word "operation"!
The correct spelling is division (a part, dividing into parts, or the arithmetic operation).
The likely word here is differential (transmission gear, or calculus operation).
The educational site is spelled the same way as the math operation: multiplication.com