hard Set 26 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [20, _] → [_, _, 10] → [4, 6, _, _] → [_, _, 3, 1, 5]

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Answer: Row3[2]=10, Row4[4]=6, Row5[2]=3, Row3[1]=10, Row4[3]=4, Row1[1]=40, Row5[1]=1, Row2[2]=20

SubType
number-pyramid
Difficulty
hard
Levels
  • [40]
  • [20,20]
  • [10,10,10]
  • [4,6,4,6]
  • [1,3,3,1,5]
Base
  • 1
  • 3
  • 3
  • 1
  • 5
TopValue
40
HiddenCells
  • {"r":2,"c":1,"v":10}
  • {"r":3,"c":3,"v":6}
  • {"r":4,"c":1,"v":3}
  • {"r":2,"c":0,"v":10}
  • {"r":3,"c":2,"v":4}
  • {"r":0,"c":0,"v":40}
  • {"r":4,"c":0,"v":1}
  • {"r":1,"c":1,"v":20}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [81] → [50, _] → [31, _, 12] → [_, _, 6, _] → [_, 8, _, _, 5]

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Answer: Row5[1]=10, Row5[3]=5, Row3[2]=19, Row4[4]=6, Row4[1]=18, Row4[2]=13, Row5[4]=1, Row2[2]=31

SubType
number-pyramid
Difficulty
hard
Levels
  • [81]
  • [50,31]
  • [31,19,12]
  • [18,13,6,6]
  • [10,8,5,1,5]
Base
  • 10
  • 8
  • 5
  • 1
  • 5
TopValue
81
HiddenCells
  • {"r":4,"c":0,"v":10}
  • {"r":4,"c":2,"v":5}
  • {"r":2,"c":1,"v":19}
  • {"r":3,"c":3,"v":6}
  • {"r":3,"c":0,"v":18}
  • {"r":3,"c":1,"v":13}
  • {"r":4,"c":3,"v":1}
  • {"r":1,"c":1,"v":31}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [123] → [_, 62] → [_, _, _] → [_, _, 15, 17] → [_, _, 6, 9, 8]

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Answer: Row3[1]=31, Row2[1]=61, Row5[2]=9, Row3[2]=30, Row5[1]=7, Row4[2]=15, Row3[3]=32, Row4[1]=16

SubType
number-pyramid
Difficulty
hard
Levels
  • [123]
  • [61,62]
  • [31,30,32]
  • [16,15,15,17]
  • [7,9,6,9,8]
Base
  • 7
  • 9
  • 6
  • 9
  • 8
TopValue
123
HiddenCells
  • {"r":2,"c":0,"v":31}
  • {"r":1,"c":0,"v":61}
  • {"r":4,"c":1,"v":9}
  • {"r":2,"c":1,"v":30}
  • {"r":4,"c":0,"v":7}
  • {"r":3,"c":1,"v":15}
  • {"r":2,"c":2,"v":32}
  • {"r":3,"c":0,"v":16}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [31, 26, _] → [_, 16, 10, 6] → [6, _, _, _, 3]

Show answer

Answer: Row5[3]=7, Row5[2]=9, Row1[1]=99, Row2[1]=57, Row2[2]=42, Row5[4]=3, Row4[1]=15, Row3[3]=16

SubType
number-pyramid
Difficulty
hard
Levels
  • [99]
  • [57,42]
  • [31,26,16]
  • [15,16,10,6]
  • [6,9,7,3,3]
Base
  • 6
  • 9
  • 7
  • 3
  • 3
TopValue
99
HiddenCells
  • {"r":4,"c":2,"v":7}
  • {"r":4,"c":1,"v":9}
  • {"r":0,"c":0,"v":99}
  • {"r":1,"c":0,"v":57}
  • {"r":1,"c":1,"v":42}
  • {"r":4,"c":3,"v":3}
  • {"r":3,"c":0,"v":15}
  • {"r":2,"c":2,"v":16}