hard 4×4 Set 81 Form Exercise

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [10, 1, 4, 9], Column headers: [1, 8, 8, 7]

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Answer: Row 10: [9, 2, 2, 3]; Row 1: [0, 7, 7, 6]; Row 4: [3, 4, 4, 3]; Row 9: [8, 1, 1, 2]

SubType
speed-grid
Difficulty
hard
Operation
-
RowHeaders
  • 10
  • 1
  • 4
  • 9
ColHeaders
  • 1
  • 8
  • 8
  • 7
Cells
  • [9,2,2,3]
  • [0,7,7,6]
  • [3,4,4,3]
  • [8,1,1,2]

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [6, 10, 1, 6], Column headers: [7, 1, 2, 7]

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Answer: Row 6: [1, 5, 4, 1]; Row 10: [3, 9, 8, 3]; Row 1: [6, 0, 1, 6]; Row 6: [1, 5, 4, 1]

SubType
speed-grid
Difficulty
hard
Operation
-
RowHeaders
  • 6
  • 10
  • 1
  • 6
ColHeaders
  • 7
  • 1
  • 2
  • 7
Cells
  • [1,5,4,1]
  • [3,9,8,3]
  • [6,0,1,6]
  • [1,5,4,1]