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): [_] → [_, 42] → [_, 21, _] → [3, 10, 11, 10] → [_, _, _, _, 7]

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Answer: Row3[3]=21, Row5[2]=2, Row1[1]=76, Row2[1]=34, Row3[1]=13, Row5[3]=8, Row5[4]=3, Row5[1]=1

SubType
number-pyramid
Difficulty
hard
Levels
  • [76]
  • [34,42]
  • [13,21,21]
  • [3,10,11,10]
  • [1,2,8,3,7]
Base
  • 1
  • 2
  • 8
  • 3
  • 7
TopValue
76
HiddenCells
  • {"r":2,"c":2,"v":21}
  • {"r":4,"c":1,"v":2}
  • {"r":0,"c":0,"v":76}
  • {"r":1,"c":0,"v":34}
  • {"r":2,"c":0,"v":13}
  • {"r":4,"c":2,"v":8}
  • {"r":4,"c":3,"v":3}
  • {"r":4,"c":0,"v":1}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [90] → [44, 46] → [_, 22, _] → [12, _, 12, 12] → [_, _, _, _, _]

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Answer: Row3[1]=22, Row5[4]=9, Row3[3]=24, Row4[2]=10, Row5[1]=5, Row5[2]=7, Row5[3]=3, Row5[5]=3

SubType
number-pyramid
Difficulty
hard
Levels
  • [90]
  • [44,46]
  • [22,22,24]
  • [12,10,12,12]
  • [5,7,3,9,3]
Base
  • 5
  • 7
  • 3
  • 9
  • 3
TopValue
90
HiddenCells
  • {"r":2,"c":0,"v":22}
  • {"r":4,"c":3,"v":9}
  • {"r":2,"c":2,"v":24}
  • {"r":3,"c":1,"v":10}
  • {"r":4,"c":0,"v":5}
  • {"r":4,"c":1,"v":7}
  • {"r":4,"c":2,"v":3}
  • {"r":4,"c":4,"v":3}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [105] → [48, _] → [_, 26, 31] → [_, _, _, _] → [_, 4, 7, 8, _]

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Answer: Row5[1]=7, Row2[2]=57, Row3[1]=22, Row4[1]=11, Row4[3]=15, Row4[4]=16, Row5[5]=8, Row4[2]=11

SubType
number-pyramid
Difficulty
hard
Levels
  • [105]
  • [48,57]
  • [22,26,31]
  • [11,11,15,16]
  • [7,4,7,8,8]
Base
  • 7
  • 4
  • 7
  • 8
  • 8
TopValue
105
HiddenCells
  • {"r":4,"c":0,"v":7}
  • {"r":1,"c":1,"v":57}
  • {"r":2,"c":0,"v":22}
  • {"r":3,"c":0,"v":11}
  • {"r":3,"c":2,"v":15}
  • {"r":3,"c":3,"v":16}
  • {"r":4,"c":4,"v":8}
  • {"r":3,"c":1,"v":11}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [69, 57] → [37, _, 25] → [_, 17, _, 10] → [_, _, _, _, 2]

Show answer

Answer: Row5[3]=7, Row4[1]=20, Row3[2]=32, Row1[1]=126, Row5[1]=10, Row4[3]=15, Row5[2]=10, Row5[4]=8

SubType
number-pyramid
Difficulty
hard
Levels
  • [126]
  • [69,57]
  • [37,32,25]
  • [20,17,15,10]
  • [10,10,7,8,2]
Base
  • 10
  • 10
  • 7
  • 8
  • 2
TopValue
126
HiddenCells
  • {"r":4,"c":2,"v":7}
  • {"r":3,"c":0,"v":20}
  • {"r":2,"c":1,"v":32}
  • {"r":0,"c":0,"v":126}
  • {"r":4,"c":0,"v":10}
  • {"r":3,"c":2,"v":15}
  • {"r":4,"c":1,"v":10}
  • {"r":4,"c":3,"v":8}