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(I) Compose and decompose numbers up to 10 with objects and pictures.

(Y1) Count collections to 100 by partitioning numbers using place value (ACMNA014)

K.NBT.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 (such as 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.

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