Mr. Teal orders the same business lunch for 5 people. Everyone has a salad for $5, a steak sandwich for $12, lemonade for $3 and desert for $4. He adds in a tip of $3 for each person. What is the total cost of 5 lunches?
Can you please explain why this is your answer?
Use rounding to estimate the product 12*9. Then, use compensation to find the actual answer. If Alison was rounding to find how much 12 books that were $9 apiece cost, would she get a good estimate? Explain.