hard Set 20 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [_, 6, _] → [_, 2, 4, 10] → [10, 1, _, 3, _]

Show answer

Answer: Row2[2]=20, Row1[1]=39, Row2[1]=19, Row5[3]=1, Row3[3]=14, Row4[1]=11, Row5[5]=7, Row3[1]=13

SubType
number-pyramid
Difficulty
hard
Levels
  • [39]
  • [19,20]
  • [13,6,14]
  • [11,2,4,10]
  • [10,1,1,3,7]
Base
  • 10
  • 1
  • 1
  • 3
  • 7
TopValue
39
HiddenCells
  • {"r":1,"c":1,"v":20}
  • {"r":0,"c":0,"v":39}
  • {"r":1,"c":0,"v":19}
  • {"r":4,"c":2,"v":1}
  • {"r":2,"c":2,"v":14}
  • {"r":3,"c":0,"v":11}
  • {"r":4,"c":4,"v":7}
  • {"r":2,"c":0,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [60] → [29, _] → [_, 14, _] → [_, 8, 6, _] → [3, 4, _, _, _]

Show answer

Answer: Row4[1]=7, Row5[3]=4, Row5[4]=2, Row5[5]=9, Row2[2]=31, Row3[3]=17, Row4[4]=11, Row3[1]=15

SubType
number-pyramid
Difficulty
hard
Levels
  • [60]
  • [29,31]
  • [15,14,17]
  • [7,8,6,11]
  • [3,4,4,2,9]
Base
  • 3
  • 4
  • 4
  • 2
  • 9
TopValue
60
HiddenCells
  • {"r":3,"c":0,"v":7}
  • {"r":4,"c":2,"v":4}
  • {"r":4,"c":3,"v":2}
  • {"r":4,"c":4,"v":9}
  • {"r":1,"c":1,"v":31}
  • {"r":2,"c":2,"v":17}
  • {"r":3,"c":3,"v":11}
  • {"r":2,"c":0,"v":15}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [97] → [_, _] → [23, 25, _] → [_, 13, _, _] → [_, 4, 9, _, 9]

Show answer

Answer: Row3[3]=24, Row2[1]=48, Row2[2]=49, Row5[4]=3, Row4[3]=12, Row4[1]=10, Row4[4]=12, Row5[1]=6

SubType
number-pyramid
Difficulty
hard
Levels
  • [97]
  • [48,49]
  • [23,25,24]
  • [10,13,12,12]
  • [6,4,9,3,9]
Base
  • 6
  • 4
  • 9
  • 3
  • 9
TopValue
97
HiddenCells
  • {"r":2,"c":2,"v":24}
  • {"r":1,"c":0,"v":48}
  • {"r":1,"c":1,"v":49}
  • {"r":4,"c":3,"v":3}
  • {"r":3,"c":2,"v":12}
  • {"r":3,"c":0,"v":10}
  • {"r":3,"c":3,"v":12}
  • {"r":4,"c":0,"v":6}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [37, _, 26] → [17, 20, _, _] → [_, 10, 10, 6, _]

Show answer

Answer: Row5[1]=7, Row1[1]=135, Row4[4]=10, Row2[1]=73, Row3[2]=36, Row4[3]=16, Row5[5]=4, Row2[2]=62

SubType
number-pyramid
Difficulty
hard
Levels
  • [135]
  • [73,62]
  • [37,36,26]
  • [17,20,16,10]
  • [7,10,10,6,4]
Base
  • 7
  • 10
  • 10
  • 6
  • 4
TopValue
135
HiddenCells
  • {"r":4,"c":0,"v":7}
  • {"r":0,"c":0,"v":135}
  • {"r":3,"c":3,"v":10}
  • {"r":1,"c":0,"v":73}
  • {"r":2,"c":1,"v":36}
  • {"r":3,"c":2,"v":16}
  • {"r":4,"c":4,"v":4}
  • {"r":1,"c":1,"v":62}