hard Set 90 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [109] → [_, _] → [20, _, _] → [10, 10, 18, _] → [8, 2, _, _, _]

Show answer

Answer: Row2[2]=61, Row3[2]=28, Row5[5]=5, Row4[4]=15, Row5[3]=8, Row3[3]=33, Row2[1]=48, Row5[4]=10

SubType
number-pyramid
Difficulty
hard
Levels
  • [109]
  • [48,61]
  • [20,28,33]
  • [10,10,18,15]
  • [8,2,8,10,5]
Base
  • 8
  • 2
  • 8
  • 10
  • 5
TopValue
109
HiddenCells
  • {"r":1,"c":1,"v":61}
  • {"r":2,"c":1,"v":28}
  • {"r":4,"c":4,"v":5}
  • {"r":3,"c":3,"v":15}
  • {"r":4,"c":2,"v":8}
  • {"r":2,"c":2,"v":33}
  • {"r":1,"c":0,"v":48}
  • {"r":4,"c":3,"v":10}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [55, _] → [_, 29, 31] → [_, _, _, 17] → [_, 10, 5, _, 8]

Show answer

Answer: Row4[3]=14, Row4[2]=15, Row3[1]=26, Row5[1]=1, Row2[2]=60, Row5[4]=9, Row4[1]=11, Row1[1]=115

SubType
number-pyramid
Difficulty
hard
Levels
  • [115]
  • [55,60]
  • [26,29,31]
  • [11,15,14,17]
  • [1,10,5,9,8]
Base
  • 1
  • 10
  • 5
  • 9
  • 8
TopValue
115
HiddenCells
  • {"r":3,"c":2,"v":14}
  • {"r":3,"c":1,"v":15}
  • {"r":2,"c":0,"v":26}
  • {"r":4,"c":0,"v":1}
  • {"r":1,"c":1,"v":60}
  • {"r":4,"c":3,"v":9}
  • {"r":3,"c":0,"v":11}
  • {"r":0,"c":0,"v":115}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [145] → [_, 69] → [_, _, _] → [_, _, 19, _] → [_, 9, 10, 9, 3]

Show answer

Answer: Row3[2]=38, Row3[1]=38, Row4[4]=12, Row4[1]=19, Row2[1]=76, Row3[3]=31, Row5[1]=10, Row4[2]=19

SubType
number-pyramid
Difficulty
hard
Levels
  • [145]
  • [76,69]
  • [38,38,31]
  • [19,19,19,12]
  • [10,9,10,9,3]
Base
  • 10
  • 9
  • 10
  • 9
  • 3
TopValue
145
HiddenCells
  • {"r":2,"c":1,"v":38}
  • {"r":2,"c":0,"v":38}
  • {"r":3,"c":3,"v":12}
  • {"r":3,"c":0,"v":19}
  • {"r":1,"c":0,"v":76}
  • {"r":2,"c":2,"v":31}
  • {"r":4,"c":0,"v":10}
  • {"r":3,"c":1,"v":19}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [44, _] → [_, 24, _] → [_, 10, 14, _] → [_, 3, _, 7, 7]

Show answer

Answer: Row2[2]=52, Row3[1]=20, Row4[1]=10, Row3[3]=28, Row4[4]=14, Row5[3]=7, Row1[1]=96, Row5[1]=7

SubType
number-pyramid
Difficulty
hard
Levels
  • [96]
  • [44,52]
  • [20,24,28]
  • [10,10,14,14]
  • [7,3,7,7,7]
Base
  • 7
  • 3
  • 7
  • 7
  • 7
TopValue
96
HiddenCells
  • {"r":1,"c":1,"v":52}
  • {"r":2,"c":0,"v":20}
  • {"r":3,"c":0,"v":10}
  • {"r":2,"c":2,"v":28}
  • {"r":3,"c":3,"v":14}
  • {"r":4,"c":2,"v":7}
  • {"r":0,"c":0,"v":96}
  • {"r":4,"c":0,"v":7}