1. Share with me your food. 2. Share your food with me. 3. Come up on stage to give a speech. 4. After you give a speech, go down off the stage to take photos with the audience. 5. When you line up at a hospital to wait for your turn to see a doctor, you are given a piece of paper that has a number on it. Is it correct to ask somebody that: What number are you? What is your order number? I have number 20. I made a few minor changes. For the last one, the most common question is "What number are you?"

Jonathan's correction to 1 made it better, but it is still not very natural. Use 2 instead.