Goldstone, Bruce <br/><br/>
Greater estimations 

 - 1st. ed. 
 - USA 
 - 32 p. 
 - 2008 
<br/><br/> How many rubber duckies are on the cover of this book? You could count each one―or you could estimate. An estimate is a good guess. Are there more than ten rubber ducks? Are there fewer than a thousand?  
<br/><br/><label>ISBN: </label>9780545211451 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Math Operations<br/>Estimates<br/>Math for kids<br/>Non-Fiction<br/>Mathematics (Literature)