Multiplying Fractions

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to ake the smallest (or largest) product.

Hint

How can we tell whether it would be better to put the larger/smaller numbers in the numerator or denominator?

Answer

Smallest: 1/9 * 2/8 or largest: 9/1 * 8/2

Source: Robert Kaplinsky

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