Mini Kakuro

The sum of each column and row in this grid give the totals as shown. What number goes in the starred square?
Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Reasoning, convincing and proving
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Problem

 


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?

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Mini Kakuro