Lesson 9 Multiplication Game Day

    • Let’s play multiplication games.

Warm-up Number Talk: Multiplying Large Factors

Find the value of each expression mentally.

Activity 1 Introduce Rectangle Rumble and How Close?

Directions for Rectangle Rumble:

  • Choose a color for your rectangles different from your partner.

  • Each partner:

    • Spin each spinner.

    • Shade in a rectangular area to represent the product of the two numbers.

    • Take turns until the grid can’t fit any more rectangles.

  • Add up your total area. The partner with the greatest total square units wins.

Directions for How Close?:

  • Each partner:

    • Take 4 cards.

    • Choose 2–3 cards to multiply.

    • Write an equation to show the product of the numbers you chose.

    • Your score for each round is the difference between your product and 100.

  • Take new cards so that you have 4 cards to start the next round.

  • At the end of the game, add your scores from each round. The player with the lowest score wins.

Activity 2 Choice Time: Multiplication Games

Choose a center to practice multiplying within 100.

  • Compare, Multiply within 100: Decide which expression has the greatest value.

  • How Close? Multiply to 100: Choose 2–3 numbers to multiply to get a product closest to 100.

  • Rectangle Rumble, Factors 1–10: Multiply numbers to create rectangular areas to fill a grid with the most squares.