Addition drill for levels 1-3

Bibliografische gegevens
Hoofdauteur:	Mock, Valerie E.
Formaat:	Boek
Taal:	English
Gepubliceerd in:	Belmont, Calif. David S. Lake Publishers c1982.
Reeks:	A learning workbooks : Mathematics [v.2]
Onderwerpen:	Addition > Study and teaching (Primary) Addition > Problems, exercises, etc.