] Sum Rows & Columns

Sum Rows & Columns

Practice Adding Integers

Tap/Click a blank cell. Then enter [1..9] to satisfy row & column sums:

A1 B1 C1 D1 T1
A2 B2 C2 D2 T2
A3 B3 C3 D3 T3
A4 B4 C4 D4 T4
Atot Btot Ctot Dtot Ttot

Enter a number [1..9]

  • 1
    •    
  • 2
    •    
  • 3
    •    
  • 4
    •    
  • 5
    •    
  • 6
    •    
  • 7
    •    
  • 8
    •    
  • 9
A1 B1 C1 D1 T1
A2 B2 C2 D2 T2
A3 B3 C3 D3 T3
A4 B4 C4 D4 T4
Atot Btot Ctot Dtot Ttot

Note: answer sets other than this one can also be correct.


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Note: The goal is to enter a 1...9 integer into each blank cell such that row and column totals are satisfied. The exercise requires trial and error integer entry and repeated summing of rows and columns. (Multiple answer sets can produce the same marginal totals.)
This web app is free to use for educational purposes.
© 2019 T.F. Fletcher (fletc003@gmail.com )

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