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Multiplying a Two-Digit Number by a Single-Digit Number

Directions: Using the numbers 1 – 4, no more than one time each, make the largest possible product.

Hint

Hint

Where do you want to put your biggest number? Where do you want to put your smallest number? What would this look like as an array?

Answer

Answer

32 x 4 = 128 is the biggest product

Source: Robert Kaplinsky

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2 comments

  1. Love the format of the boxes above but do not see them on the worksheet.
    Is it possible to have those boxes added to the worksheet?
    Many thanks for your great website
    sincerely
    Robin Schwartz

    • Hi Robin. The Open Middle Worksheet is not problem specific. So, for every problem students will need to add the boxes to their worksheet. Sorry!

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