hard Set 81 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [43, 41] → [22, _, _] → [_, 12, 9, _] → [1, _, _, 6, _]

Show answer

Answer: Row4[4]=11, Row5[2]=9, Row3[3]=20, Row5[5]=5, Row3[2]=21, Row4[1]=10, Row1[1]=84, Row5[3]=3

SubType
number-pyramid
Difficulty
hard
Levels
  • [84]
  • [43,41]
  • [22,21,20]
  • [10,12,9,11]
  • [1,9,3,6,5]
Base
  • 1
  • 9
  • 3
  • 6
  • 5
TopValue
84
HiddenCells
  • {"r":3,"c":3,"v":11}
  • {"r":4,"c":1,"v":9}
  • {"r":2,"c":2,"v":20}
  • {"r":4,"c":4,"v":5}
  • {"r":2,"c":1,"v":21}
  • {"r":3,"c":0,"v":10}
  • {"r":0,"c":0,"v":84}
  • {"r":4,"c":2,"v":3}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [_, 17, 14] → [9, _, 8, 6] → [_, 6, _, 5, _]

Show answer

Answer: Row5[5]=1, Row2[2]=31, Row2[1]=35, Row5[3]=3, Row5[1]=3, Row4[2]=9, Row3[1]=18, Row1[1]=66

SubType
number-pyramid
Difficulty
hard
Levels
  • [66]
  • [35,31]
  • [18,17,14]
  • [9,9,8,6]
  • [3,6,3,5,1]
Base
  • 3
  • 6
  • 3
  • 5
  • 1
TopValue
66
HiddenCells
  • {"r":4,"c":4,"v":1}
  • {"r":1,"c":1,"v":31}
  • {"r":1,"c":0,"v":35}
  • {"r":4,"c":2,"v":3}
  • {"r":4,"c":0,"v":3}
  • {"r":3,"c":1,"v":9}
  • {"r":2,"c":0,"v":18}
  • {"r":0,"c":0,"v":66}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [49, 49] → [22, _, 22] → [_, _, 13, _] → [1, 7, _, _, _]

Show answer

Answer: Row4[1]=8, Row5[4]=6, Row1[1]=98, Row4[2]=14, Row5[5]=3, Row5[3]=7, Row4[4]=9, Row3[2]=27

SubType
number-pyramid
Difficulty
hard
Levels
  • [98]
  • [49,49]
  • [22,27,22]
  • [8,14,13,9]
  • [1,7,7,6,3]
Base
  • 1
  • 7
  • 7
  • 6
  • 3
TopValue
98
HiddenCells
  • {"r":3,"c":0,"v":8}
  • {"r":4,"c":3,"v":6}
  • {"r":0,"c":0,"v":98}
  • {"r":3,"c":1,"v":14}
  • {"r":4,"c":4,"v":3}
  • {"r":4,"c":2,"v":7}
  • {"r":3,"c":3,"v":9}
  • {"r":2,"c":1,"v":27}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 19] → [13, _, _] → [_, _, 5, _] → [7, 1, _, 1, 3]

Show answer

Answer: Row2[1]=23, Row4[2]=5, Row3[3]=9, Row4[1]=8, Row4[4]=4, Row3[2]=10, Row1[1]=42, Row5[3]=4

SubType
number-pyramid
Difficulty
hard
Levels
  • [42]
  • [23,19]
  • [13,10,9]
  • [8,5,5,4]
  • [7,1,4,1,3]
Base
  • 7
  • 1
  • 4
  • 1
  • 3
TopValue
42
HiddenCells
  • {"r":1,"c":0,"v":23}
  • {"r":3,"c":1,"v":5}
  • {"r":2,"c":2,"v":9}
  • {"r":3,"c":0,"v":8}
  • {"r":3,"c":3,"v":4}
  • {"r":2,"c":1,"v":10}
  • {"r":0,"c":0,"v":42}
  • {"r":4,"c":2,"v":4}