Number puzzles / 
compiled by Norman Barrett. 
 - London :  Kingfisher Books,  c1992. 
 - 38p. : col. ill. ; 26 cm. 
 - First step math series .
<br/><br/><label>ISBN: </label>086272905x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical recreations--Juvenile literature.<br/>Mathematical recreations.