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Pair Sums

Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?

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Weekly Problem 16 - 2012

Weekly Problem 16 - 2012

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Weekly Problem 47 - 2013

Weekly Problem 47 - 2013

Up, Down, Flying Around

Stage: 3 Challenge Level: Challenge Level:1

SeeĀ Adding and Subtracting Positive and Negative Numbers for some suggestions of how to use this game as part of introductory work on Directed Numbers.