1. Reasonableness

2. Essential Question: Essential Question: How can you judge the reasonableness of the results of number estimates or computations? SPI: 6.1.2

3. What does it mean to be REASONABLE?

4. Example 1: Which is the most reasonable estimate for the SUM of 4.01 and 6.92? a)2 b)11 c)28 d)20

5. Example 2: Which is the most reasonable estimate for the SUM of 3.08 and 6.07? a)10 b)9 c)3 d)18

6. Example 3: Delia received $85 for his birthday. He wants to use the money to buy concert tickets. If the tickets cost $18 each, how many tickets can Dario purchase?

7. Example 4: Kerry is going to the movies and needs to purchase tickets for her and her friends. Each movie ticket cost $7.50. Kerry has $36, how many tickets can she purchase ?

8. Example 5: Paul is having a cookout and needs to purchase ice cream sandwiches for dessert. One pack costs $3.55. Paul has $15.00. How many packs of ice cream sandwiches can he purchase?

9. Example 6: Kerry is going to the movies and needs to purchase tickets for her and her friends. Each movie ticket cost $7.50. Kerry has $36, how many tickets can she purchase ?

10. Example 7: Hot dogs come in packages of 38. You buy 11 packages for a cookout. Estimate how many hot dogs you buy ?

11. Example 8: You need to make 62 blueberry muffins. One batch of muffins makes 18. How many batches do you need to make ?

12. Example 7: Peter is multiplying 4.119 by 10.5. ALL of the ESTIMATES below for the solution are reasonable EXCEPT which one? a)39 b)40 c)41 d)42

13. Example 8: A CD cost $19.95. Jake gets a 10% DISCOUNT. About how much does he pay for the CD? a)$2 b)$18 c)$21 d)$23

14. Example 9: The 6 th graders at LMS are going on a field trip. There are 410 students going. Each school bus holds 60 students. How many busses are needed for each student to attend the field trip?

15. Example 10: Danielle is buying gifts for her friends for the holiday season. She decided to purchase the same hair bows for each friend. Each hair bow cost $4.50 each. She has $25 to spend. How many hair bows can she purchase?

16. Ticket Out The Door: 1.Abby is bringing cupcakes to school for her birthday. There are 140 students in her mini-school that she wants to give a cupcake to. One pack contains 25 cupcakes. How many packs must Abby bring to make sure everyone is included? 2.Timmy received $40 for his birthday. He wants to use the money to buy video games. If the video games cost $9 each, how many games can Timmy purchase?