hard 4×4 Set 80 Form Exercise

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

Show answer

Answer: Row 9: [90, 45, 72, 36]; Row 3: [30, 15, 24, 12]; Row 9: [90, 45, 72, 36]; Row 4: [40, 20, 32, 16]

SubType
speed-grid
Difficulty
hard
Operation
×
RowHeaders
  • 9
  • 3
  • 9
  • 4
ColHeaders
  • 10
  • 5
  • 8
  • 4
Cells
  • [90,45,72,36]
  • [30,15,24,12]
  • [90,45,72,36]
  • [40,20,32,16]

Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 10, 2, 3], Column headers: [4, 5, 10, 10]

Show answer

Answer: Row 8: [12, 13, 18, 18]; Row 10: [14, 15, 20, 20]; Row 2: [6, 7, 12, 12]; Row 3: [7, 8, 13, 13]

SubType
speed-grid
Difficulty
hard
Operation
+
RowHeaders
  • 8
  • 10
  • 2
  • 3
ColHeaders
  • 4
  • 5
  • 10
  • 10
Cells
  • [12,13,18,18]
  • [14,15,20,20]
  • [6,7,12,12]
  • [7,8,13,13]