hard Set 91 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [70, 70] → [_, _, 34] → [15, _, 17, _] → [_, 10, _, _, 9]

Show answer

Answer: Row4[4]=17, Row5[4]=8, Row1[1]=140, Row3[1]=34, Row4[2]=19, Row5[3]=9, Row3[2]=36, Row5[1]=5

SubType
number-pyramid
Difficulty
hard
Levels
  • [140]
  • [70,70]
  • [34,36,34]
  • [15,19,17,17]
  • [5,10,9,8,9]
Base
  • 5
  • 10
  • 9
  • 8
  • 9
TopValue
140
HiddenCells
  • {"r":3,"c":3,"v":17}
  • {"r":4,"c":3,"v":8}
  • {"r":0,"c":0,"v":140}
  • {"r":2,"c":0,"v":34}
  • {"r":3,"c":1,"v":19}
  • {"r":4,"c":2,"v":9}
  • {"r":2,"c":1,"v":36}
  • {"r":4,"c":0,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [50, _] → [_, 23, _] → [_, 14, 9, 8] → [_, 9, _, _, 4]

Show answer

Answer: Row3[1]=27, Row1[1]=90, Row5[4]=4, Row3[3]=17, Row5[1]=4, Row4[1]=13, Row2[2]=40, Row5[3]=5

SubType
number-pyramid
Difficulty
hard
Levels
  • [90]
  • [50,40]
  • [27,23,17]
  • [13,14,9,8]
  • [4,9,5,4,4]
Base
  • 4
  • 9
  • 5
  • 4
  • 4
TopValue
90
HiddenCells
  • {"r":2,"c":0,"v":27}
  • {"r":0,"c":0,"v":90}
  • {"r":4,"c":3,"v":4}
  • {"r":2,"c":2,"v":17}
  • {"r":4,"c":0,"v":4}
  • {"r":3,"c":0,"v":13}
  • {"r":1,"c":1,"v":40}
  • {"r":4,"c":2,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [90] → [_, 52] → [12, _, _] → [_, 10, _, _] → [_, 1, 9, _, 3]

Show answer

Answer: Row4[4]=10, Row5[4]=7, Row3[3]=26, Row5[1]=1, Row3[2]=26, Row2[1]=38, Row4[1]=2, Row4[3]=16

SubType
number-pyramid
Difficulty
hard
Levels
  • [90]
  • [38,52]
  • [12,26,26]
  • [2,10,16,10]
  • [1,1,9,7,3]
Base
  • 1
  • 1
  • 9
  • 7
  • 3
TopValue
90
HiddenCells
  • {"r":3,"c":3,"v":10}
  • {"r":4,"c":3,"v":7}
  • {"r":2,"c":2,"v":26}
  • {"r":4,"c":0,"v":1}
  • {"r":2,"c":1,"v":26}
  • {"r":1,"c":0,"v":38}
  • {"r":3,"c":0,"v":2}
  • {"r":3,"c":2,"v":16}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [82] → [_, _] → [_, 19, 26] → [11, _, _, _] → [_, _, 3, 9, 5]

Show answer

Answer: Row2[1]=37, Row4[4]=14, Row5[1]=7, Row2[2]=45, Row4[3]=12, Row3[1]=18, Row4[2]=7, Row5[2]=4

SubType
number-pyramid
Difficulty
hard
Levels
  • [82]
  • [37,45]
  • [18,19,26]
  • [11,7,12,14]
  • [7,4,3,9,5]
Base
  • 7
  • 4
  • 3
  • 9
  • 5
TopValue
82
HiddenCells
  • {"r":1,"c":0,"v":37}
  • {"r":3,"c":3,"v":14}
  • {"r":4,"c":0,"v":7}
  • {"r":1,"c":1,"v":45}
  • {"r":3,"c":2,"v":12}
  • {"r":2,"c":0,"v":18}
  • {"r":3,"c":1,"v":7}
  • {"r":4,"c":1,"v":4}