At the arcade Dave had won 37 tickets. If he used 48 to buy some toys and 27 more to buy some clothes How many more tickets did Dave use to buy toys than he did to buy clothes?
Dave had 37 tickets. 
He used 48 tickets to buy toys. 
That means he had 1 ticket left. 
He used 27 tickets to buy clothes. 
That means he had no tickets left. 

So, Dave used 21 more tickets to buy toys than he did to buy clothes.