The 11 times table lists the multiples of 11: 11 × 1 = 11, 11 × 2 = 22, … 11 × 12 = 132. "11x" usually refers to this multiplication table.
"11x" can mean 11 times a variable, but most people searching it want the 11 times table: 11 × 1 = 11, 11 × 2 = 22, … 11 × 12 = 132.
Learn the multiples of 11 from 11 × 1 = 11 up to 11 × 12 = 132. Count up by 11 each time, or drill yourself with the table above.