hard 4×4 Set 99 Form Exercise

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [2, 1, 8, 9], Column headers: [10, 1, 5, 2]

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Answer: Row 2: [12, 3, 7, 4]; Row 1: [11, 2, 6, 3]; Row 8: [18, 9, 13, 10]; Row 9: [19, 10, 14, 11]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 2
  • 1
  • 8
  • 9
ColHeaders
  • 10
  • 1
  • 5
  • 2
Cells
  • [12,3,7,4]
  • [11,2,6,3]
  • [18,9,13,10]
  • [19,10,14,11]

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [3, 2, 6, 3], Column headers: [1, 2, 7, 7]

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

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