# The teen numbers

Understand that the teen numbers (11–19) are composed of ten ones and some further ones (early place value)

Builds on: How Many in Total? (hard, https://ai.page/c/how-many-in-total/en.md), Reading and writing numbers to 20 (hard, https://ai.page/c/reading-and-writing-numbers-to-20/en.md)

Concept id: the-teen-numbers. Subject: maths. Licence: CC BY-SA 4.0.

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