###Human: Adrianna has 10 pieces of gum to share with her friends. There wasn't enough gum for all her friends, so she went to the store to get 3 more pieces of gum. She gave out gum to 11 friends. How many pieces of gum does Adrianna have now?, ### Assistant: After buying 3 pieces of gum Ariana has 10 + 3 = 13 pieces of gum.
After giving her 11 friends gum Ariana has 13 - 11 = 2 pieces of gum left. 
 So the answer is :  2