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: [8, 4, 2, 1], Column headers: [4, 2, 1, 2]

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Answer: Row 8: [32, 16, 8, 16]; Row 4: [16, 8, 4, 8]; Row 2: [8, 4, 2, 4]; Row 1: [4, 2, 1, 2]

SubType
speed-grid
Difficulty
hard
Operation
×
RowHeaders
  • 8
  • 4
  • 2
  • 1
ColHeaders
  • 4
  • 2
  • 1
  • 2
Cells
  • [32,16,8,16]
  • [16,8,4,8]
  • [8,4,2,4]
  • [4,2,1,2]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [9, 4, 10, 5], Column headers: [6, 9, 8, 7]

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Answer: Row 9: [15, 18, 17, 16]; Row 4: [10, 13, 12, 11]; Row 10: [16, 19, 18, 17]; Row 5: [11, 14, 13, 12]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 9
  • 4
  • 10
  • 5
ColHeaders
  • 6
  • 9
  • 8
  • 7
Cells
  • [15,18,17,16]
  • [10,13,12,11]
  • [16,19,18,17]
  • [11,14,13,12]