Official Pack · American English

Build English Numbers up to 100

Learn the irregular forms eleven and twelve, the -teen pattern, the tens, hyphenated compounds such as twenty-one, and one hundred. The examples give you enough structure to form the other numbers through 100.

17 items · Updated August 21, 2026

A few things you will learn

  1. 11

    elevenEleven comes after ten.
  2. 12

    twelveTwelve is an even number.
  3. 13

    thirteenThirteen is one more than twelve.
  4. 15

    fifteenFifteen is five more than ten.
  5. 18

    eighteenEighteen is nine plus nine.

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