Sharks and Fish

Step 1: The teacher will give you a paper plate with 20 gold fish crackers on it.
Step 2: Solve the question 2+1 and eat that many gold fish crackers.
Step 3: Solve the question 3-2 and eat that many gold fish crackers.
Step 4: Solve the question 5-2 and eat that many gold fish crackers.
Step 5: Solve the question 4+1 and eat that many gold fish crackers.
Step 6: Solve the question 2-1 and eat that many gold fish crackers.
Step 7: Solve the question 6-1 and eat that many gold fish crackers.
Step 8: Solve the question 3+2 and eat that many gold fish crackers.
Step 9: Solve the question 4-2 and eat that many gold fish crackers.
Step 10: After completing steps 1-9, bring your plate with the left over gold fish crackers on it, to the teacher so she tell you if you are right.