hard Set 20 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [107] → [_, _] → [23, _, 26] → [_, _, _, _] → [2, 7, 7, _, 3]

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Answer: Row2[1]=52, Row4[3]=15, Row3[2]=29, Row2[2]=55, Row4[1]=9, Row5[4]=8, Row4[2]=14, Row4[4]=11

SubType
number-pyramid
Difficulty
hard
Levels
  • [107]
  • [52,55]
  • [23,29,26]
  • [9,14,15,11]
  • [2,7,7,8,3]
Base
  • 2
  • 7
  • 7
  • 8
  • 3
TopValue
107
HiddenCells
  • {"r":1,"c":0,"v":52}
  • {"r":3,"c":2,"v":15}
  • {"r":2,"c":1,"v":29}
  • {"r":1,"c":1,"v":55}
  • {"r":3,"c":0,"v":9}
  • {"r":4,"c":3,"v":8}
  • {"r":3,"c":1,"v":14}
  • {"r":3,"c":3,"v":11}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [80] → [34, 46] → [_, 17, _] → [_, _, _, 17] → [_, _, _, 10, 7]

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Answer: Row5[3]=2, Row4[1]=12, Row4[3]=12, Row5[1]=9, Row3[1]=17, Row4[2]=5, Row3[3]=29, Row5[2]=3

SubType
number-pyramid
Difficulty
hard
Levels
  • [80]
  • [34,46]
  • [17,17,29]
  • [12,5,12,17]
  • [9,3,2,10,7]
Base
  • 9
  • 3
  • 2
  • 10
  • 7
TopValue
80
HiddenCells
  • {"r":4,"c":2,"v":2}
  • {"r":3,"c":0,"v":12}
  • {"r":3,"c":2,"v":12}
  • {"r":4,"c":0,"v":9}
  • {"r":2,"c":0,"v":17}
  • {"r":3,"c":1,"v":5}
  • {"r":2,"c":2,"v":29}
  • {"r":4,"c":1,"v":3}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [95] → [_, _] → [_, _, 18] → [_, 16, 9, _] → [1, 10, _, 3, _]

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Answer: Row2[1]=52, Row3[1]=27, Row3[2]=25, Row5[3]=6, Row4[1]=11, Row5[5]=6, Row2[2]=43, Row4[4]=9

SubType
number-pyramid
Difficulty
hard
Levels
  • [95]
  • [52,43]
  • [27,25,18]
  • [11,16,9,9]
  • [1,10,6,3,6]
Base
  • 1
  • 10
  • 6
  • 3
  • 6
TopValue
95
HiddenCells
  • {"r":1,"c":0,"v":52}
  • {"r":2,"c":0,"v":27}
  • {"r":2,"c":1,"v":25}
  • {"r":4,"c":2,"v":6}
  • {"r":3,"c":0,"v":11}
  • {"r":4,"c":4,"v":6}
  • {"r":1,"c":1,"v":43}
  • {"r":3,"c":3,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [77, _] → [_, 38, _] → [_, 20, 18, 12] → [_, _, _, 8, 4]

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Answer: Row5[1]=9, Row4[1]=19, Row1[1]=145, Row3[1]=39, Row3[3]=30, Row5[3]=10, Row2[2]=68, Row5[2]=10

SubType
number-pyramid
Difficulty
hard
Levels
  • [145]
  • [77,68]
  • [39,38,30]
  • [19,20,18,12]
  • [9,10,10,8,4]
Base
  • 9
  • 10
  • 10
  • 8
  • 4
TopValue
145
HiddenCells
  • {"r":4,"c":0,"v":9}
  • {"r":3,"c":0,"v":19}
  • {"r":0,"c":0,"v":145}
  • {"r":2,"c":0,"v":39}
  • {"r":2,"c":2,"v":30}
  • {"r":4,"c":2,"v":10}
  • {"r":1,"c":1,"v":68}
  • {"r":4,"c":1,"v":10}