hard 4×4 Set 30 Form Exercise

Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [7, 5, 3, 1], Column headers: [3, 10, 6, 4]

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Answer: Row 7: [21, 70, 42, 28]; Row 5: [15, 50, 30, 20]; Row 3: [9, 30, 18, 12]; Row 1: [3, 10, 6, 4]

SubType
speed-grid
Difficulty
hard
Operation
×
RowHeaders
  • 7
  • 5
  • 3
  • 1
ColHeaders
  • 3
  • 10
  • 6
  • 4
Cells
  • [21,70,42,28]
  • [15,50,30,20]
  • [9,30,18,12]
  • [3,10,6,4]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [10, 5, 5, 8], Column headers: [1, 4, 9, 3]

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Answer: Row 10: [11, 14, 19, 13]; Row 5: [6, 9, 14, 8]; Row 5: [6, 9, 14, 8]; Row 8: [9, 12, 17, 11]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 10
  • 5
  • 5
  • 8
ColHeaders
  • 1
  • 4
  • 9
  • 3
Cells
  • [11,14,19,13]
  • [6,9,14,8]
  • [6,9,14,8]
  • [9,12,17,11]