Subtraction drill for levels 1-3

Detalles Bibliográficos
Autor Principal:	Mock, Valerie E.
Formato:	Libro
Idioma:	English
Publicado:	Belmont, Calif. David S. Lake Publishers c1982.
Series:	A learning workbooks : Mathematics [v.3]
Subjects:	Subtraction > Study and teaching (Primary) Subtraction > Problems, exercises, etc.