hard 4×4 Set 61 Form Exercise

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 1, 7, 1], Column headers: [2, 10, 4, 4]

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Answer: Row 8: [10, 18, 12, 12]; Row 1: [3, 11, 5, 5]; Row 7: [9, 17, 11, 11]; Row 1: [3, 11, 5, 5]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 8
  • 1
  • 7
  • 1
ColHeaders
  • 2
  • 10
  • 4
  • 4
Cells
  • [10,18,12,12]
  • [3,11,5,5]
  • [9,17,11,11]
  • [3,11,5,5]

Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [3, 10, 2, 4], Column headers: [1, 1, 4, 9]

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Answer: Row 3: [2, 2, 1, 6]; Row 10: [9, 9, 6, 1]; Row 2: [1, 1, 2, 7]; Row 4: [3, 3, 0, 5]

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