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Mini Kakuro

Age 11 to 14 Short Challenge Level:
 

Use seven of the digits from 1 to 9 to fill in each unshaded square, so that no digit is repeated, and the totals of the entries in the rows and columns are as shown.

What number goes in the starred square?

 

 

 

 

This problem is taken from the UKMT Mathematical Challenges.
You can find more short problems, arranged by curriculum topic, in our short problems collection.