Calculations made easy : addition & multiplication subtraction & division 
Jensen, Paz Alegria Lacsamana. 
 -  Anvil Publishing, Inc.,  2012 
 - ix, 158 p. 
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<br/><br/><label>ISBN: </label>978-9-71272648-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics -- Study and teaching.
<br/><br/><label>Dewey Class. No.: </label>F 510.7 J545 2012