Adding+ones+and+tens

=**We are learning to add ones and tens separately when appropriate. **= =media type="file" key="MOV00773.MPG" media type="file" key="MOV00774.MPG" media type="file" key="MOV00775.MPG" media type="file" key="MOV00776.MPG" media type="file" key="MOV00777.MPG" media type="file" key="MOV00778.MPG" =