Robert Kaplinsky

Adding Fractions

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make the smallest (or largest) sum. Source: Robert Kaplinsky

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Adding Mixed Numbers

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make the largest sum. Source: Robert Kaplinsky

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Subtracting Mixed Numbers

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make the least possible difference. Source: Robert Kaplinsky

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Scientific Notation

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make the greatest (or least) product.   Source: Bryan Meyer

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Factoring Quadratics

Directions: Fill in the blanks with integers so that the quadratic expression is factorable.   Source: Nanette Johnson

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