Math At Home

Use only the 2s, 3s, 4s, 5s, 6s, and aces(1s) from a deck of cards.  Each player writes the numbers 1-12 on a piece of paper. Then each player picks two cards and adds up the numbers on them. The player can mark off that sum on the paper or cross off the two numbers on the cards. Who will be the first to cross of all 12 numbers on the list?