hard 4×4 Set 18 Form Exercise

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [3, 8, 9, 4], Column headers: [7, 1, 4, 6]

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Answer: Row 3: [10, 4, 7, 9]; Row 8: [15, 9, 12, 14]; Row 9: [16, 10, 13, 15]; Row 4: [11, 5, 8, 10]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 3
  • 8
  • 9
  • 4
ColHeaders
  • 7
  • 1
  • 4
  • 6
Cells
  • [10,4,7,9]
  • [15,9,12,14]
  • [16,10,13,15]
  • [11,5,8,10]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [5, 2, 3, 8], Column headers: [1, 9, 10, 10]

Show answer

Answer: Row 5: [6, 14, 15, 15]; Row 2: [3, 11, 12, 12]; Row 3: [4, 12, 13, 13]; Row 8: [9, 17, 18, 18]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 5
  • 2
  • 3
  • 8
ColHeaders
  • 1
  • 9
  • 10
  • 10
Cells
  • [6,14,15,15]
  • [3,11,12,12]
  • [4,12,13,13]
  • [9,17,18,18]