Unit 4, Section A

What Is Division?

Grade 3

Practice

1. Problem 1

   3.OA.1

   Pre-unit

   Student Task Statement

   

   1. Write a multiplication expression that represents the array.
   2. Write a multiplication equation that represents the array.

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2. Problem 2

   3.MD.7

   Pre-unit

   Student Task Statement

   Find the area of each rectangle.

   

   

3. Problem 3

   3.MD.7

   Pre-unit

   Student Task Statement

   The area of the rectangle is 40 square centimeters.

   Find the unknown side length of the rectangle. Explain your reasoning.

   

4. Problem 4

   Pre-unit

   Student Task Statement

   Find the number that makes each equation true.

5. Problem 5

   Pre-unit

   Student Task Statement

   There are 6 volleyball teams in the gym. Each team has 10 players. How many volleyball players are there altogether?

   1. Make a drawing to represent the situation.
   2. Write an equation with a symbol for the unknown that represents the situation.
   3. Solve the problem.

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6. Problem 6

   ForLesson 1: How Many Groups?

   Student Task Statement

   For each problem, show your thinking using a drawing or a diagram.

   1. There are 40 apples packed into boxes. There are 8 apples in each box. How many boxes are there?
   2. There are 40 apples packed into boxes. There are 10 apples in each box. How many boxes are there?

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7. Problem 7

   ForLesson 2: How Many in Each Group?

   Student Task Statement

   For each problem, show your thinking using a drawing or a diagram.

   1. There are 30 oranges. They are packed into 5 bags with the same number of oranges in each bag. How many oranges are in each bag?
   2. There are 30 oranges. They are packed into 3 bags with the same number of oranges in each bag. How many oranges are in each bag?

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8. Problem 8

   ForLesson 3: Division Situation Drawings

   Student Task Statement

   1. Ten people go to the movies in cars. Two people go in each car. How many cars are there? Show your thinking using a drawing or a diagram.
   2. Ten other people go to the movies in cars. They ride in 2 cars with the same number of people in each car. How many people are in each car? Show your thinking using a drawing or diagram.
   3. How are the 2 situations similar? How are they different? How are the diagrams  similar? How are they different?

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9. Problem 9

   ForLesson 4: Interpret Division Expressions

   Student Task Statement

   There are 20 desks in the class. They are divided equally into 5 groups. How many desks are in each group?

   1. Which expression best represents this situation: or ? Explain your reasoning.

   2. Choose the diagram that represents this situation. Explain your reasoning.

      

      

10. Problem 10

    ForLesson 5: Write Division Expressions

    Student Task Statement

    Mai’s family picked 40 peaches. They put 5 peaches in each bag.

    1. Write a division expression that represents the situation.
    2. How many bags of peaches did Mai’s family pick? Explain or show your reasoning.

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11. Problem 11

    Exploration

    Student Task Statement

    Complete each problem by putting a number in each blank that makes sense. Draw a diagram to represent and solve each problem.

    1. Mai has __________ stickers. She puts the same number of stickers on each of her 5 notebooks. How many stickers are on each notebook?
       
    2. Andre has __________ cards. He arranges them in rows of __________ cards each. How many rows of cards does Andre make?

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12. Problem 12

    Exploration

    Student Task Statement

    Write a division situation to match each diagram.

    

    

    

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