hard Set 81 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [_, 27, 21] → [_, 15, 12, _] → [4, _, 7, _, 4]

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Answer: Row1[1]=102, Row2[2]=48, Row4[1]=12, Row5[2]=8, Row5[4]=5, Row2[1]=54, Row4[4]=9, Row3[1]=27

SubType
number-pyramid
Difficulty
hard
Levels
  • [102]
  • [54,48]
  • [27,27,21]
  • [12,15,12,9]
  • [4,8,7,5,4]
Base
  • 4
  • 8
  • 7
  • 5
  • 4
TopValue
102
HiddenCells
  • {"r":0,"c":0,"v":102}
  • {"r":1,"c":1,"v":48}
  • {"r":3,"c":0,"v":12}
  • {"r":4,"c":1,"v":8}
  • {"r":4,"c":3,"v":5}
  • {"r":1,"c":0,"v":54}
  • {"r":3,"c":3,"v":9}
  • {"r":2,"c":0,"v":27}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [57] → [29, _] → [_, _, _] → [_, _, _, 6] → [6, 3, _, 5, 1]

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Answer: Row2[2]=28, Row5[3]=3, Row4[3]=8, Row3[3]=14, Row3[1]=15, Row3[2]=14, Row4[1]=9, Row4[2]=6

SubType
number-pyramid
Difficulty
hard
Levels
  • [57]
  • [29,28]
  • [15,14,14]
  • [9,6,8,6]
  • [6,3,3,5,1]
Base
  • 6
  • 3
  • 3
  • 5
  • 1
TopValue
57
HiddenCells
  • {"r":1,"c":1,"v":28}
  • {"r":4,"c":2,"v":3}
  • {"r":3,"c":2,"v":8}
  • {"r":2,"c":2,"v":14}
  • {"r":2,"c":0,"v":15}
  • {"r":2,"c":1,"v":14}
  • {"r":3,"c":0,"v":9}
  • {"r":3,"c":1,"v":6}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [81] → [_, _] → [26, _, _] → [_, _, _, 15] → [5, _, 1, 5, 10]

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Answer: Row4[2]=11, Row2[2]=38, Row4[3]=6, Row2[1]=43, Row3[3]=21, Row3[2]=17, Row4[1]=15, Row5[2]=10

SubType
number-pyramid
Difficulty
hard
Levels
  • [81]
  • [43,38]
  • [26,17,21]
  • [15,11,6,15]
  • [5,10,1,5,10]
Base
  • 5
  • 10
  • 1
  • 5
  • 10
TopValue
81
HiddenCells
  • {"r":3,"c":1,"v":11}
  • {"r":1,"c":1,"v":38}
  • {"r":3,"c":2,"v":6}
  • {"r":1,"c":0,"v":43}
  • {"r":2,"c":2,"v":21}
  • {"r":2,"c":1,"v":17}
  • {"r":3,"c":0,"v":15}
  • {"r":4,"c":1,"v":10}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [77] → [47, _] → [_, _, _] → [_, 11, _, _] → [10, 10, 1, 4, _]

Show answer

Answer: Row5[5]=5, Row4[4]=9, Row4[1]=20, Row3[1]=31, Row3[2]=16, Row4[3]=5, Row2[2]=30, Row3[3]=14

SubType
number-pyramid
Difficulty
hard
Levels
  • [77]
  • [47,30]
  • [31,16,14]
  • [20,11,5,9]
  • [10,10,1,4,5]
Base
  • 10
  • 10
  • 1
  • 4
  • 5
TopValue
77
HiddenCells
  • {"r":4,"c":4,"v":5}
  • {"r":3,"c":3,"v":9}
  • {"r":3,"c":0,"v":20}
  • {"r":2,"c":0,"v":31}
  • {"r":2,"c":1,"v":16}
  • {"r":3,"c":2,"v":5}
  • {"r":1,"c":1,"v":30}
  • {"r":2,"c":2,"v":14}