Cutler, Ann, Tr. <br/><br/>
Trachtenberg speed system of basic mathematics 

 - New Delhi  Rupa & Co.  1985 
 - 270p  
<br/><br/><label>ISBN: </label>285629166 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics -- Speed Mathematics<br/>Multiplication -- Speed multiplication<br/>Speed mathematics<br/>Squares and Square roots<br/>Trachtenberg speed system -- Mathematics