hard 4×4 Set 54 Form Exercise

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [4, 9, 1, 2], Column headers: [8, 2, 1, 7]

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Answer: Row 4: [12, 6, 5, 11]; Row 9: [17, 11, 10, 16]; Row 1: [9, 3, 2, 8]; Row 2: [10, 4, 3, 9]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 4
  • 9
  • 1
  • 2
ColHeaders
  • 8
  • 2
  • 1
  • 7
Cells
  • [12,6,5,11]
  • [17,11,10,16]
  • [9,3,2,8]
  • [10,4,3,9]

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [4, 4, 10, 2], Column headers: [4, 10, 10, 6]

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Answer: Row 4: [0, 6, 6, 2]; Row 4: [0, 6, 6, 2]; Row 10: [6, 0, 0, 4]; Row 2: [2, 8, 8, 4]

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