hard Set 21 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [78] → [_, 38] → [_, 23, _] → [_, 12, _, _] → [2, _, 9, 2, _]

Show answer

Answer: Row4[4]=4, Row5[5]=2, Row5[2]=3, Row3[3]=15, Row4[1]=5, Row3[1]=17, Row4[3]=11, Row2[1]=40

SubType
number-pyramid
Difficulty
hard
Levels
  • [78]
  • [40,38]
  • [17,23,15]
  • [5,12,11,4]
  • [2,3,9,2,2]
Base
  • 2
  • 3
  • 9
  • 2
  • 2
TopValue
78
HiddenCells
  • {"r":3,"c":3,"v":4}
  • {"r":4,"c":4,"v":2}
  • {"r":4,"c":1,"v":3}
  • {"r":2,"c":2,"v":15}
  • {"r":3,"c":0,"v":5}
  • {"r":2,"c":0,"v":17}
  • {"r":3,"c":2,"v":11}
  • {"r":1,"c":0,"v":40}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [23, 26, 26] → [12, _, 15, 11] → [8, _, _, _, _]

Show answer

Answer: Row2[2]=52, Row2[1]=49, Row5[5]=3, Row5[4]=8, Row4[2]=11, Row5[2]=4, Row5[3]=7, Row1[1]=101

SubType
number-pyramid
Difficulty
hard
Levels
  • [101]
  • [49,52]
  • [23,26,26]
  • [12,11,15,11]
  • [8,4,7,8,3]
Base
  • 8
  • 4
  • 7
  • 8
  • 3
TopValue
101
HiddenCells
  • {"r":1,"c":1,"v":52}
  • {"r":1,"c":0,"v":49}
  • {"r":4,"c":4,"v":3}
  • {"r":4,"c":3,"v":8}
  • {"r":3,"c":1,"v":11}
  • {"r":4,"c":1,"v":4}
  • {"r":4,"c":2,"v":7}
  • {"r":0,"c":0,"v":101}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [63, _] → [30, _, _] → [15, _, _, 18] → [_, 6, 9, 9, _]

Show answer

Answer: Row5[5]=9, Row5[1]=9, Row1[1]=132, Row2[2]=69, Row3[2]=33, Row3[3]=36, Row4[3]=18, Row4[2]=15

SubType
number-pyramid
Difficulty
hard
Levels
  • [132]
  • [63,69]
  • [30,33,36]
  • [15,15,18,18]
  • [9,6,9,9,9]
Base
  • 9
  • 6
  • 9
  • 9
  • 9
TopValue
132
HiddenCells
  • {"r":4,"c":4,"v":9}
  • {"r":4,"c":0,"v":9}
  • {"r":0,"c":0,"v":132}
  • {"r":1,"c":1,"v":69}
  • {"r":2,"c":1,"v":33}
  • {"r":2,"c":2,"v":36}
  • {"r":3,"c":2,"v":18}
  • {"r":3,"c":1,"v":15}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [121] → [_, _] → [_, _, 29] → [11, _, 18, 11] → [5, _, _, 9, _]

Show answer

Answer: Row2[1]=59, Row4[2]=15, Row5[3]=9, Row5[2]=6, Row5[5]=2, Row2[2]=62, Row3[2]=33, Row3[1]=26

SubType
number-pyramid
Difficulty
hard
Levels
  • [121]
  • [59,62]
  • [26,33,29]
  • [11,15,18,11]
  • [5,6,9,9,2]
Base
  • 5
  • 6
  • 9
  • 9
  • 2
TopValue
121
HiddenCells
  • {"r":1,"c":0,"v":59}
  • {"r":3,"c":1,"v":15}
  • {"r":4,"c":2,"v":9}
  • {"r":4,"c":1,"v":6}
  • {"r":4,"c":4,"v":2}
  • {"r":1,"c":1,"v":62}
  • {"r":2,"c":1,"v":33}
  • {"r":2,"c":0,"v":26}