# Domain K.NBT, Number and Operations in Base Ten

## Cluster K.NBT.A, Work with numbers 11-19 to gain foundations for place value.

### Standard 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 (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.