1. 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 (e.g., 18 = ); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.

2. Fill in the Blank 13
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. 3

3. Fill in the Blank 18
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. 10

4. Fill in the Blank 1 11
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.

5. Fill in the Blank 10 16
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.

6. 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.

7. 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.

8. 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.

9. 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.