Prentice Hall math skill builder,   unit 1: a number system. 

 - Boston, MA :  Pearson Prentice Hall,   ©2007. 
 - 46 pages :  some color illustrations ;  27 cm 
<br/><br/><label>ISBN: </label>132015102 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics --(Middle school)--Study and teaching <br/>Mathematics --Remedial training
<br/><br/><label>Dewey Class. No.: </label>C 372.7   / P918n 2007