Paul got a box of 110 crayons for his birthday. During the school year he gave 90 crayons to his friends while he lost 412 crayons. How many more crayons did he lose than those he gave to his friends?
. 

Paul got 110 crayons for his birthday. 

During the school year, he gave 90 crayons to his friends. 

That means he has 20 crayons left. 

During the school year, he lost 412 crayons. 

That means he lost 392 more crayons than those he gave to his friends.