Scholastic 100 + problems kids, need to do by 2nd grade :   addition & subtraction. 

 - New York :  Scholastic,  2004. 
 - 32 p. : ill.:  27 cm. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>0-439-66967-7 
<br/><br/><label>LC Class. No.: </label>513 On2