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Table Total
Age
14 to 16
Short
Challenge Level
Secondary curriculum
Problem
Solutions
In each row of the table, the third cell contains the sum of the contents of the first two cells.
In each column of the table, the third cell contains the sum of the contents of the first two cells.
What total would you get if you added up the contents of all nine cells?
This problem is adapted from the
World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our
short problems collection
.