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Counting Chairs
- Jessie is setting up chairs for the assembly. She has set up 15 rows of 10 chairs. How many chairs did Jessie set up?
- Luis was at the other end of the room setting up chairs as well. He set up 12 rows of 14 chairs. How many chairs did Luis set up?
- Mr. Z needs to set up chairs for a performance in the gym. He needs to set up 400 chairs. He has already set up 18 rows of 16 chairs. Has Mr. Z set up enough chairs? How do you know?
- The high school auditorium has 32 rows of 24 chairs. John estimated that there were 600 seats in the auditorium. How would you help John find an even better estimate?
Ordering School Supplies
Check-In: Questions 23–27
- Ana is helping to order items for the school store. She needs to order 25 packs of pencils. How much will the pencils cost?
- Twenty-two students need protractors and compasses. Ana decides to order 25 of each to have a few extra. How much will the protractors and compasses cost?
- Thirty students need rulers. The supply company is offering a discount on rulers if the order is over $30. If Ana orders 30 rulers, will she get the discount? Explain your reasoning.