Directions: Using the digits 1 to 9 at most twice each, make the sum of the four expressions the greatest possible value. Source: Catriona Shearer

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## Scientific Notation 2

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make a product that equals 800,000,000. Source: Robert Kaplinsky

Read More »## Differences in Scientific Notation

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make the largest (or smallest) absolute difference. Source: Marie Isaac

Read More »## Scientific Notation

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

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