The teen numbers

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

Usually learned at ages 5–7

Builds on: How Many in Total?, Reading and writing numbers to 20

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On the map from: Marble Skill Taxonomy (v1), © Generative Spark, Inc. (withmarble.com), text CC BY-SA 4.0, database ODbL 1.0: https://github.com/withmarbleapp/os-taxonomy