The Number System

Three Digit Integer Sums

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to find the second greatest solution. Source: Neil Hamilton

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Multiplying Integers 2

Directions: Using the integers -9 to 9 at most one time each, place an integer in each box to make the greatest possible product. Source: Robert Kaplinsky in Open Middle Math

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Multiplying Integers 1

Directions: Using the integers -9 to 9 at most one time each, place an integer in each box to make two products: one where the product is positive and one where the product is negative. You may reuse all the integers for each product. Source: Robert Kaplinsky in Open Middle Math

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