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: [6, 5, 4, 9], Column headers: [4, 3, 1, 4]

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Answer: Row 6: [10, 9, 7, 10]; Row 5: [9, 8, 6, 9]; Row 4: [8, 7, 5, 8]; Row 9: [13, 12, 10, 13]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 6
  • 5
  • 4
  • 9
ColHeaders
  • 4
  • 3
  • 1
  • 4
Cells
  • [10,9,7,10]
  • [9,8,6,9]
  • [8,7,5,8]
  • [13,12,10,13]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [3, 10, 2, 1], Column headers: [3, 6, 8, 6]

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Answer: Row 3: [6, 9, 11, 9]; Row 10: [13, 16, 18, 16]; Row 2: [5, 8, 10, 8]; Row 1: [4, 7, 9, 7]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 3
  • 10
  • 2
  • 1
ColHeaders
  • 3
  • 6
  • 8
  • 6
Cells
  • [6,9,11,9]
  • [13,16,18,16]
  • [5,8,10,8]
  • [4,7,9,7]