hard Set 21 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [20, _, 23] → [_, _, 10, _] → [9, 5, _, 9, 4]

Show answer

Answer: Row4[1]=14, Row4[2]=6, Row2[1]=36, Row2[2]=39, Row5[3]=1, Row1[1]=75, Row3[2]=16, Row4[4]=13

SubType
number-pyramid
Difficulty
hard
Levels
  • [75]
  • [36,39]
  • [20,16,23]
  • [14,6,10,13]
  • [9,5,1,9,4]
Base
  • 9
  • 5
  • 1
  • 9
  • 4
TopValue
75
HiddenCells
  • {"r":3,"c":0,"v":14}
  • {"r":3,"c":1,"v":6}
  • {"r":1,"c":0,"v":36}
  • {"r":1,"c":1,"v":39}
  • {"r":4,"c":2,"v":1}
  • {"r":0,"c":0,"v":75}
  • {"r":2,"c":1,"v":16}
  • {"r":3,"c":3,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [29, 20] → [17, 12, _] → [9, _, _, _] → [_, _, _, 2, 2]

Show answer

Answer: Row5[3]=2, Row3[3]=8, Row4[2]=8, Row1[1]=49, Row5[2]=6, Row4[3]=4, Row4[4]=4, Row5[1]=3

SubType
number-pyramid
Difficulty
hard
Levels
  • [49]
  • [29,20]
  • [17,12,8]
  • [9,8,4,4]
  • [3,6,2,2,2]
Base
  • 3
  • 6
  • 2
  • 2
  • 2
TopValue
49
HiddenCells
  • {"r":4,"c":2,"v":2}
  • {"r":2,"c":2,"v":8}
  • {"r":3,"c":1,"v":8}
  • {"r":0,"c":0,"v":49}
  • {"r":4,"c":1,"v":6}
  • {"r":3,"c":2,"v":4}
  • {"r":3,"c":3,"v":4}
  • {"r":4,"c":0,"v":3}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [_, 31, 19] → [_, _, _, 6] → [_, 10, 8, 5, 1]

Show answer

Answer: Row4[3]=13, Row4[2]=18, Row4[1]=20, Row3[1]=38, Row2[2]=50, Row5[1]=10, Row2[1]=69, Row1[1]=119

SubType
number-pyramid
Difficulty
hard
Levels
  • [119]
  • [69,50]
  • [38,31,19]
  • [20,18,13,6]
  • [10,10,8,5,1]
Base
  • 10
  • 10
  • 8
  • 5
  • 1
TopValue
119
HiddenCells
  • {"r":3,"c":2,"v":13}
  • {"r":3,"c":1,"v":18}
  • {"r":3,"c":0,"v":20}
  • {"r":2,"c":0,"v":38}
  • {"r":1,"c":1,"v":50}
  • {"r":4,"c":0,"v":10}
  • {"r":1,"c":0,"v":69}
  • {"r":0,"c":0,"v":119}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [120] → [58, 62] → [_, _, 31] → [_, _, 16, 15] → [4, _, _, _, _]

Show answer

Answer: Row3[1]=27, Row5[5]=6, Row5[2]=8, Row4[1]=12, Row4[2]=15, Row5[3]=7, Row3[2]=31, Row5[4]=9

SubType
number-pyramid
Difficulty
hard
Levels
  • [120]
  • [58,62]
  • [27,31,31]
  • [12,15,16,15]
  • [4,8,7,9,6]
Base
  • 4
  • 8
  • 7
  • 9
  • 6
TopValue
120
HiddenCells
  • {"r":2,"c":0,"v":27}
  • {"r":4,"c":4,"v":6}
  • {"r":4,"c":1,"v":8}
  • {"r":3,"c":0,"v":12}
  • {"r":3,"c":1,"v":15}
  • {"r":4,"c":2,"v":7}
  • {"r":2,"c":1,"v":31}
  • {"r":4,"c":3,"v":9}