hard Set 55 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [87] → [43, _] → [21, _, _] → [12, _, 13, _] → [_, _, 6, 7, _]

Show answer

Answer: Row4[2]=9, Row5[2]=3, Row5[1]=9, Row3[2]=22, Row4[4]=9, Row3[3]=22, Row2[2]=44, Row5[5]=2

SubType
number-pyramid
Difficulty
hard
Levels
  • [87]
  • [43,44]
  • [21,22,22]
  • [12,9,13,9]
  • [9,3,6,7,2]
Base
  • 9
  • 3
  • 6
  • 7
  • 2
TopValue
87
HiddenCells
  • {"r":3,"c":1,"v":9}
  • {"r":4,"c":1,"v":3}
  • {"r":4,"c":0,"v":9}
  • {"r":2,"c":1,"v":22}
  • {"r":3,"c":3,"v":9}
  • {"r":2,"c":2,"v":22}
  • {"r":1,"c":1,"v":44}
  • {"r":4,"c":4,"v":2}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [64] → [_, _] → [18, _, _] → [_, 8, _, _] → [_, 1, 7, 2, 1]

Show answer

Answer: Row3[3]=12, Row3[2]=17, Row4[3]=9, Row4[1]=10, Row5[1]=9, Row2[2]=29, Row4[4]=3, Row2[1]=35

SubType
number-pyramid
Difficulty
hard
Levels
  • [64]
  • [35,29]
  • [18,17,12]
  • [10,8,9,3]
  • [9,1,7,2,1]
Base
  • 9
  • 1
  • 7
  • 2
  • 1
TopValue
64
HiddenCells
  • {"r":2,"c":2,"v":12}
  • {"r":2,"c":1,"v":17}
  • {"r":3,"c":2,"v":9}
  • {"r":3,"c":0,"v":10}
  • {"r":4,"c":0,"v":9}
  • {"r":1,"c":1,"v":29}
  • {"r":3,"c":3,"v":3}
  • {"r":1,"c":0,"v":35}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 30] → [25, 17, 13] → [13, 12, _, _] → [_, _, _, _, 7]

Show answer

Answer: Row5[4]=1, Row4[4]=8, Row5[2]=8, Row5[1]=5, Row5[3]=4, Row1[1]=72, Row4[3]=5, Row2[1]=42

SubType
number-pyramid
Difficulty
hard
Levels
  • [72]
  • [42,30]
  • [25,17,13]
  • [13,12,5,8]
  • [5,8,4,1,7]
Base
  • 5
  • 8
  • 4
  • 1
  • 7
TopValue
72
HiddenCells
  • {"r":4,"c":3,"v":1}
  • {"r":3,"c":3,"v":8}
  • {"r":4,"c":1,"v":8}
  • {"r":4,"c":0,"v":5}
  • {"r":4,"c":2,"v":4}
  • {"r":0,"c":0,"v":72}
  • {"r":3,"c":2,"v":5}
  • {"r":1,"c":0,"v":42}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [36] → [_, _] → [11, _, _] → [7, _, 3, _] → [5, 2, _, _, 7]

Show answer

Answer: Row2[2]=18, Row5[4]=1, Row5[3]=2, Row4[2]=4, Row3[3]=11, Row4[4]=8, Row3[2]=7, Row2[1]=18

SubType
number-pyramid
Difficulty
hard
Levels
  • [36]
  • [18,18]
  • [11,7,11]
  • [7,4,3,8]
  • [5,2,2,1,7]
Base
  • 5
  • 2
  • 2
  • 1
  • 7
TopValue
36
HiddenCells
  • {"r":1,"c":1,"v":18}
  • {"r":4,"c":3,"v":1}
  • {"r":4,"c":2,"v":2}
  • {"r":3,"c":1,"v":4}
  • {"r":2,"c":2,"v":11}
  • {"r":3,"c":3,"v":8}
  • {"r":2,"c":1,"v":7}
  • {"r":1,"c":0,"v":18}