hard 4×4 Set 51 Form Exercise

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 10, 2, 9], Column headers: [7, 10, 5, 5]

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Answer: Row 8: [15, 18, 13, 13]; Row 10: [17, 20, 15, 15]; Row 2: [9, 12, 7, 7]; Row 9: [16, 19, 14, 14]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 8
  • 10
  • 2
  • 9
ColHeaders
  • 7
  • 10
  • 5
  • 5
Cells
  • [15,18,13,13]
  • [17,20,15,15]
  • [9,12,7,7]
  • [16,19,14,14]

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [3, 10, 10, 5], Column headers: [1, 6, 3, 7]

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Answer: Row 3: [2, 3, 0, 4]; Row 10: [9, 4, 7, 3]; Row 10: [9, 4, 7, 3]; Row 5: [4, 1, 2, 2]

SubType
speed-grid
Difficulty
hard
Operation
-
RowHeaders
  • 3
  • 10
  • 10
  • 5
ColHeaders
  • 1
  • 6
  • 3
  • 7
Cells
  • [2,3,0,4]
  • [9,4,7,3]
  • [9,4,7,3]
  • [4,1,2,2]