hard 4×4 Set 31 Form Exercise

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [9, 8, 3, 5], Column headers: [7, 9, 3, 5]

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Answer: Row 9: [2, 0, 6, 4]; Row 8: [1, 1, 5, 3]; Row 3: [4, 6, 0, 2]; Row 5: [2, 4, 2, 0]

SubType
speed-grid
Difficulty
hard
Operation
-
RowHeaders
  • 9
  • 8
  • 3
  • 5
ColHeaders
  • 7
  • 9
  • 3
  • 5
Cells
  • [2,0,6,4]
  • [1,1,5,3]
  • [4,6,0,2]
  • [2,4,2,0]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [6, 6, 8, 5], Column headers: [8, 6, 4, 8]

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Answer: Row 6: [14, 12, 10, 14]; Row 6: [14, 12, 10, 14]; Row 8: [16, 14, 12, 16]; Row 5: [13, 11, 9, 13]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 6
  • 6
  • 8
  • 5
ColHeaders
  • 8
  • 6
  • 4
  • 8
Cells
  • [14,12,10,14]
  • [14,12,10,14]
  • [16,14,12,16]
  • [13,11,9,13]