hard 4×4 Set 91 Form Exercise

Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 5, 1, 3], Column headers: [3, 1, 7, 9]

Show answer

Answer: Row 8: [24, 8, 56, 72]; Row 5: [15, 5, 35, 45]; Row 1: [3, 1, 7, 9]; Row 3: [9, 3, 21, 27]

SubType
speed-grid
Difficulty
hard
Operation
×
RowHeaders
  • 8
  • 5
  • 1
  • 3
ColHeaders
  • 3
  • 1
  • 7
  • 9
Cells
  • [24,8,56,72]
  • [15,5,35,45]
  • [3,1,7,9]
  • [9,3,21,27]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 6, 1, 6], Column headers: [6, 2, 8, 6]

Show answer

Answer: Row 8: [14, 10, 16, 14]; Row 6: [12, 8, 14, 12]; Row 1: [7, 3, 9, 7]; Row 6: [12, 8, 14, 12]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 8
  • 6
  • 1
  • 6
ColHeaders
  • 6
  • 2
  • 8
  • 6
Cells
  • [14,10,16,14]
  • [12,8,14,12]
  • [7,3,9,7]
  • [12,8,14,12]