Sundar, Sandhaya. <br/><br/>
Challenging maths:  primary 1/ 
Sandhaya Sundar. 
 - Singapore:  Educational Publishing House Pte Ltd.,  2011. 
 - 216p. 
<br/><br/><label>ISBN: </label>9789814274562 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>TR 372.6 Su721 2011