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: [2, 6, 7, 9], Column headers: [1, 2, 6, 10]

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Answer: Row 2: [3, 4, 8, 12]; Row 6: [7, 8, 12, 16]; Row 7: [8, 9, 13, 17]; Row 9: [10, 11, 15, 19]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 2
  • 6
  • 7
  • 9
ColHeaders
  • 1
  • 2
  • 6
  • 10
Cells
  • [3,4,8,12]
  • [7,8,12,16]
  • [8,9,13,17]
  • [10,11,15,19]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 8, 6, 3], Column headers: [7, 3, 6, 3]

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Answer: Row 8: [15, 11, 14, 11]; Row 8: [15, 11, 14, 11]; Row 6: [13, 9, 12, 9]; Row 3: [10, 6, 9, 6]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 8
  • 8
  • 6
  • 3
ColHeaders
  • 7
  • 3
  • 6
  • 3
Cells
  • [15,11,14,11]
  • [15,11,14,11]
  • [13,9,12,9]
  • [10,6,9,6]