Biggest Product 3

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to and make the greatest/least product.


Which numbers should we use? Which numbers should we not use?


Greatest: (9-2)(8-1)

Source: Nanette Johnson

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Comparing Fractions

Directions: Using the numbers 1-9, each one time only, fill in the blanks to make …


  1. Mrs. Elliott's 4th graders

    Subtract the numbers that are next to each other. That will get you to the product of 1.

    Example: (9-8)(7-6) = 1×1=1

  2. Least: from Srihaas A in Mrs. Kinney’s Class (9-2) (1-8) = -49

  3. Least:
    (1-9)(8-2) = -56

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