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

Click anywhere on the slide show to zoom and demonstrate.

Fill in the Blank


Have students share the different ways they determined the answer.  After several strategies are shared have students discuss which strategy was the most efficient for them.

  • Facebook Clean Grey
  • Twitter Clean Grey

For additional information contact:

IL Classrooms in Action

13 and 3