The number 11 is the natural number following 10 and preceding 12. It is the first two-digit number and a prime number.
This video explains how to show the number 11 in many different ways: I Can Show the Number 11 In So Many Ways Jack Hartmann Kids Music Channel YouTube · Jun 28, 2022
Etymology: The word “eleven” comes from Old High German, with roots meaning “one left” or “one over” (as in, one more than ten).
Idiom: “Up to eleven” is a phrase, often referencing the film This Is Spinal Tap, meaning to go beyond normal limits, as 11 is one higher than 10.
Time: The “eleventh hour” refers to the final moment or the last possible time to do something.
Representation: In English, it is a “teen number,” but unlike 13–19, its name does not follow the “-teen” structure.
This video features a song that teaches multiplication by eleven: All Mixed Up | Multiply By Music | Jack Hartmann Jack Hartmann Kids Music Channel YouTube · Aug 25, 2025
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