Paul got a box of 25 crayons for his birthday. During the school year he lost 13 crayons while he gave away 37 crayons to his friends. How many more crayons did he give to his friends than those he lost?
Paul got 25 crayons. 
He lost 13 crayons. 
That means he has 12 crayons left. 
He gave away 37 crayons. 
That means he gave away 37 - 12 = 25 crayons. 

So he gave away more crayons than he lost.