hard 4×4 Set 50 Form Exercise

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [4, 1, 10, 9], Column headers: [3, 10, 9, 8]

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Answer: Row 4: [7, 14, 13, 12]; Row 1: [4, 11, 10, 9]; Row 10: [13, 20, 19, 18]; Row 9: [12, 19, 18, 17]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 4
  • 1
  • 10
  • 9
ColHeaders
  • 3
  • 10
  • 9
  • 8
Cells
  • [7,14,13,12]
  • [4,11,10,9]
  • [13,20,19,18]
  • [12,19,18,17]

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [6, 8, 5, 10], Column headers: [8, 2, 9, 5]

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Answer: Row 6: [2, 4, 3, 1]; Row 8: [0, 6, 1, 3]; Row 5: [3, 3, 4, 0]; Row 10: [2, 8, 1, 5]

SubType
speed-grid
Difficulty
hard
Operation
-
RowHeaders
  • 6
  • 8
  • 5
  • 10
ColHeaders
  • 8
  • 2
  • 9
  • 5
Cells
  • [2,4,3,1]
  • [0,6,1,3]
  • [3,3,4,0]
  • [2,8,1,5]