expert 4×4 Set 81 Form Exercise

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [5, 1, 3], Column headers: [10, 10, 8]

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Answer: Row 5: [15, 15, 13]; Row 1: [11, 11, 9]; Row 3: [13, 13, 11]

SubType
speed-grid
Difficulty
expert
Operation
+
RowHeaders
  • 5
  • 1
  • 3
ColHeaders
  • 10
  • 10
  • 8
Cells
  • [15,15,13]
  • [11,11,9]
  • [13,13,11]

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [4, 3, 2], Column headers: [1, 4, 9]

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Answer: Row 4: [3, 0, 5]; Row 3: [2, 1, 6]; Row 2: [1, 2, 7]

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