Common Core State Standards for Math

K.NBT.A.1

6b9cbaef-d7cc-11e8-824f-0242ac160002 6b9b1161-d7cc-11e8-824f-0242ac160002 6b9dda33-d7cc-11e8-824f-0242ac160002 K.NBT.A K.NBT.A.1

Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (e.g., 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.

Propose a mapping

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