Math Arguments

Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.

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Item 1005

Averaging the Multiplication Table

A. What is the average value of all the products in a multiplication table? Would it be the middle number by any chance (if there is an obvious central number)?



B. Is there a pattern for the average of any rectangular section of a multiplication table?




C.Please explain how that worked!


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James Tanton
MS Math

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