hard 4×4 Set 20 Form Exercise

Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [6, 6, 2, 10], Column headers: [1, 4, 7, 9]

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Answer: Row 6: [6, 24, 42, 54]; Row 6: [6, 24, 42, 54]; Row 2: [2, 8, 14, 18]; Row 10: [10, 40, 70, 90]

SubType
speed-grid
Difficulty
hard
Operation
×
RowHeaders
  • 6
  • 6
  • 2
  • 10
ColHeaders
  • 1
  • 4
  • 7
  • 9
Cells
  • [6,24,42,54]
  • [6,24,42,54]
  • [2,8,14,18]
  • [10,40,70,90]

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

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Answer: Row 10: [20, 20, 12, 15]; Row 2: [12, 12, 4, 7]; Row 5: [15, 15, 7, 10]; Row 7: [17, 17, 9, 12]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 10
  • 2
  • 5
  • 7
ColHeaders
  • 10
  • 10
  • 2
  • 5
Cells
  • [20,20,12,15]
  • [12,12,4,7]
  • [15,15,7,10]
  • [17,17,9,12]