hard 4×4 Set 31 Form Exercise

Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [4, 2, 7, 7], Column headers: [2, 9, 1, 10]

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Answer: Row 4: [8, 36, 4, 40]; Row 2: [4, 18, 2, 20]; Row 7: [14, 63, 7, 70]; Row 7: [14, 63, 7, 70]

SubType
speed-grid
Difficulty
hard
Operation
×
RowHeaders
  • 4
  • 2
  • 7
  • 7
ColHeaders
  • 2
  • 9
  • 1
  • 10
Cells
  • [8,36,4,40]
  • [4,18,2,20]
  • [14,63,7,70]
  • [14,63,7,70]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [4, 7, 3, 5], Column headers: [9, 6, 6, 8]

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

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