Lacsamana-Jensen, Paz A <br/><br/>
Speed math :  subtraction & division / 
Paz A. Lacsamana-Jensen. 
 - Pasig City :  Anvil Publishing,  c2006. 
 - 168 p. 
<br/><br/> Includes bibliography. 
<br/><br/><label>ISBN: </label>978-971-27-1789-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Secondary)<br/>Subtraction<br/>Division
<br/><br/><label>LC Class. No.: </label>QA 107.L119   / .S16 2006