Number and calculations 1 

 - Essex :  Pearson Education,  c2006. 
 - 48 p. :  ill. 
 - Longman mathsworks .
<br/><br/><label>ISBN: </label>9780582818828 0582818826 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic Problems, exercises  
<br/><br/><label>LC Class. No.: </label>TC527  / .L68 2000 
<br/><br/><label>Dewey Class. No.: </label>513