hard Set 52 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [_, 19, _] → [13, 8, 11, _] → [9, 4, _, 7, _]

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Answer: Row3[1]=21, Row4[4]=8, Row5[5]=1, Row2[1]=40, Row2[2]=38, Row5[3]=4, Row1[1]=78, Row3[3]=19

SubType
number-pyramid
Difficulty
hard
Levels
  • [78]
  • [40,38]
  • [21,19,19]
  • [13,8,11,8]
  • [9,4,4,7,1]
Base
  • 9
  • 4
  • 4
  • 7
  • 1
TopValue
78
HiddenCells
  • {"r":2,"c":0,"v":21}
  • {"r":3,"c":3,"v":8}
  • {"r":4,"c":4,"v":1}
  • {"r":1,"c":0,"v":40}
  • {"r":1,"c":1,"v":38}
  • {"r":4,"c":2,"v":4}
  • {"r":0,"c":0,"v":78}
  • {"r":2,"c":2,"v":19}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [120] → [53, _] → [23, 30, _] → [11, _, _, 19] → [8, _, _, _, _]

Show answer

Answer: Row2[2]=67, Row5[4]=9, Row5[3]=9, Row5[2]=3, Row4[2]=12, Row3[3]=37, Row5[5]=10, Row4[3]=18

SubType
number-pyramid
Difficulty
hard
Levels
  • [120]
  • [53,67]
  • [23,30,37]
  • [11,12,18,19]
  • [8,3,9,9,10]
Base
  • 8
  • 3
  • 9
  • 9
  • 10
TopValue
120
HiddenCells
  • {"r":1,"c":1,"v":67}
  • {"r":4,"c":3,"v":9}
  • {"r":4,"c":2,"v":9}
  • {"r":4,"c":1,"v":3}
  • {"r":3,"c":1,"v":12}
  • {"r":2,"c":2,"v":37}
  • {"r":4,"c":4,"v":10}
  • {"r":3,"c":2,"v":18}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [57, _] → [_, _, _] → [_, _, 9, 4] → [_, 10, 7, 2, 2]

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Answer: Row4[1]=14, Row1[1]=96, Row3[2]=26, Row3[3]=13, Row5[1]=4, Row3[1]=31, Row4[2]=17, Row2[2]=39

SubType
number-pyramid
Difficulty
hard
Levels
  • [96]
  • [57,39]
  • [31,26,13]
  • [14,17,9,4]
  • [4,10,7,2,2]
Base
  • 4
  • 10
  • 7
  • 2
  • 2
TopValue
96
HiddenCells
  • {"r":3,"c":0,"v":14}
  • {"r":0,"c":0,"v":96}
  • {"r":2,"c":1,"v":26}
  • {"r":2,"c":2,"v":13}
  • {"r":4,"c":0,"v":4}
  • {"r":2,"c":0,"v":31}
  • {"r":3,"c":1,"v":17}
  • {"r":1,"c":1,"v":39}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [85] → [35, _] → [_, 18, _] → [12, _, 13, _] → [10, _, _, _, 9]

Show answer

Answer: Row5[3]=3, Row4[2]=5, Row3[1]=17, Row3[3]=32, Row2[2]=50, Row5[4]=10, Row4[4]=19, Row5[2]=2

SubType
number-pyramid
Difficulty
hard
Levels
  • [85]
  • [35,50]
  • [17,18,32]
  • [12,5,13,19]
  • [10,2,3,10,9]
Base
  • 10
  • 2
  • 3
  • 10
  • 9
TopValue
85
HiddenCells
  • {"r":4,"c":2,"v":3}
  • {"r":3,"c":1,"v":5}
  • {"r":2,"c":0,"v":17}
  • {"r":2,"c":2,"v":32}
  • {"r":1,"c":1,"v":50}
  • {"r":4,"c":3,"v":10}
  • {"r":3,"c":3,"v":19}
  • {"r":4,"c":1,"v":2}