hard Set 99 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [_, _, _] → [_, 18, 13, 13] → [4, 9, 9, _, 9]

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Answer: Row3[3]=26, Row3[1]=31, Row2[1]=62, Row5[4]=4, Row1[1]=119, Row2[2]=57, Row3[2]=31, Row4[1]=13

SubType
number-pyramid
Difficulty
hard
Levels
  • [119]
  • [62,57]
  • [31,31,26]
  • [13,18,13,13]
  • [4,9,9,4,9]
Base
  • 4
  • 9
  • 9
  • 4
  • 9
TopValue
119
HiddenCells
  • {"r":2,"c":2,"v":26}
  • {"r":2,"c":0,"v":31}
  • {"r":1,"c":0,"v":62}
  • {"r":4,"c":3,"v":4}
  • {"r":0,"c":0,"v":119}
  • {"r":1,"c":1,"v":57}
  • {"r":2,"c":1,"v":31}
  • {"r":3,"c":0,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [65] → [34, _] → [19, 15, _] → [_, _, _, _] → [4, 6, _, 3, _]

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Answer: Row4[3]=6, Row4[2]=9, Row4[1]=10, Row3[3]=16, Row2[2]=31, Row4[4]=10, Row5[3]=3, Row5[5]=7

SubType
number-pyramid
Difficulty
hard
Levels
  • [65]
  • [34,31]
  • [19,15,16]
  • [10,9,6,10]
  • [4,6,3,3,7]
Base
  • 4
  • 6
  • 3
  • 3
  • 7
TopValue
65
HiddenCells
  • {"r":3,"c":2,"v":6}
  • {"r":3,"c":1,"v":9}
  • {"r":3,"c":0,"v":10}
  • {"r":2,"c":2,"v":16}
  • {"r":1,"c":1,"v":31}
  • {"r":3,"c":3,"v":10}
  • {"r":4,"c":2,"v":3}
  • {"r":4,"c":4,"v":7}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [41, _] → [_, _, _] → [9, _, 10, _] → [3, 6, _, 5, 3]

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Answer: Row5[3]=5, Row3[1]=20, Row4[2]=11, Row1[1]=80, Row2[2]=39, Row3[3]=18, Row3[2]=21, Row4[4]=8

SubType
number-pyramid
Difficulty
hard
Levels
  • [80]
  • [41,39]
  • [20,21,18]
  • [9,11,10,8]
  • [3,6,5,5,3]
Base
  • 3
  • 6
  • 5
  • 5
  • 3
TopValue
80
HiddenCells
  • {"r":4,"c":2,"v":5}
  • {"r":2,"c":0,"v":20}
  • {"r":3,"c":1,"v":11}
  • {"r":0,"c":0,"v":80}
  • {"r":1,"c":1,"v":39}
  • {"r":2,"c":2,"v":18}
  • {"r":2,"c":1,"v":21}
  • {"r":3,"c":3,"v":8}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [45] → [_, _] → [_, _, _] → [12, _, _, _] → [9, 3, 1, 4, 2]

Show answer

Answer: Row2[2]=20, Row3[1]=16, Row3[3]=11, Row4[2]=4, Row4[3]=5, Row3[2]=9, Row2[1]=25, Row4[4]=6

SubType
number-pyramid
Difficulty
hard
Levels
  • [45]
  • [25,20]
  • [16,9,11]
  • [12,4,5,6]
  • [9,3,1,4,2]
Base
  • 9
  • 3
  • 1
  • 4
  • 2
TopValue
45
HiddenCells
  • {"r":1,"c":1,"v":20}
  • {"r":2,"c":0,"v":16}
  • {"r":2,"c":2,"v":11}
  • {"r":3,"c":1,"v":4}
  • {"r":3,"c":2,"v":5}
  • {"r":2,"c":1,"v":9}
  • {"r":1,"c":0,"v":25}
  • {"r":3,"c":3,"v":6}