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Warm Up

Warm Up. 82 x 7 = 2. 786 ÷ 6 =. 3. The table below shows how many pumpkins are in each box. How many pumpkins are in 12 cases? 4. 9,786 tickets were sold at YeeHaw Fest. If there was 15,000 tickets to start with. How many were left for next year?.

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Warm Up

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  1. Warm Up • 82 x 7 = • 2. 786 ÷ 6 = 3. The table below shows how many pumpkins are in each box. How many pumpkins are in 12 cases? 4. 9,786 tickets were sold at YeeHaw Fest. If there was 15,000 tickets to start with. How many were left for next year?

  2. For his birthday, Nicholas received $20.00 and 29 toy cars. The week after his birthday he rode his bike 1.7 miles to the mall to go shopping. He purchased a book for $4.25, two puzzles for $1.25 each, and a model airplane for $5. All the models in the store cost $5. • Exactly how much would it cost to buy 8 model airplanes?

  3. Ms. Santos’s Apples Solve the following problems in your math notebook: As you work on these problems, think about the relationship between them. How are these two problems the same? How are they different? What do the arrays or pictures that you draw for each problem show you about the relationship? After 10 mins.: Share and record representations of the problems on chart paper.

  4. Ms. Santos’s Apples Possible Solutions: 168 ÷ 28= 6 168 ÷ 14=12 6 x 28=16812 x 14=168 14 14 6 6 6 28 28 14 14 14 14 14 28 28 14 14 28 14 14 28 28 14 14 When Ms. Santos found that she could put only 14 apples in a box, how did that change the number of boxes she needed? What do you know about the numbers 28 and 14? What do you notice about your solutions to these two problems?

  5. Ms. Santos’s Apples Possible Solutions: 168 ÷ 28= 6 168 ÷ 14=12 1. 6 x 28=16812 x 14=168 2. 14 14 6 6 6 28 28 14 14 14 14 14 28 28 14 14 28 14 14 28 28 14 14 How does solution 1 show what happens to the number of boxes? How does solution 2 show what happens when the size of the boxes is cut in half? Would this ides work with other numbers? What if we wanted to pack 168 apples in even smaller boxes that hold only 7 apples? What do you think would happen to the number of boxes?

  6. Independent Work: Related Problems about Doubles and Halves Complete Student Activity Pages 53 and 54 Problems 1a-f: Solve the problem in each pair, and then use that answer to help solve the second problem. As you look at the two problems, notice whether one factor in the second problem has been doubled or halved. Look carefully at each pair because the second problem does not always change in the same way. Think of each problem pair in the story context of apples in boxes. Math Menu: Once your paper is complete: Play Multiplication Migration in groups no larger than 4.

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