hard Set 13 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [45, 36] → [24, _, 15] → [12, _, _, 6] → [7, _, _, _, _]

Show answer

Answer: Row4[2]=12, Row5[3]=7, Row1[1]=81, Row5[5]=4, Row3[2]=21, Row4[3]=9, Row5[2]=5, Row5[4]=2

SubType
number-pyramid
Difficulty
hard
Levels
  • [81]
  • [45,36]
  • [24,21,15]
  • [12,12,9,6]
  • [7,5,7,2,4]
Base
  • 7
  • 5
  • 7
  • 2
  • 4
TopValue
81
HiddenCells
  • {"r":3,"c":1,"v":12}
  • {"r":4,"c":2,"v":7}
  • {"r":0,"c":0,"v":81}
  • {"r":4,"c":4,"v":4}
  • {"r":2,"c":1,"v":21}
  • {"r":3,"c":2,"v":9}
  • {"r":4,"c":1,"v":5}
  • {"r":4,"c":3,"v":2}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [70] → [44, _] → [27, _, 9] → [15, _, _, _] → [_, 9, _, 2, _]

Show answer

Answer: Row2[2]=26, Row4[2]=12, Row5[5]=2, Row5[3]=3, Row4[3]=5, Row4[4]=4, Row5[1]=6, Row3[2]=17

SubType
number-pyramid
Difficulty
hard
Levels
  • [70]
  • [44,26]
  • [27,17,9]
  • [15,12,5,4]
  • [6,9,3,2,2]
Base
  • 6
  • 9
  • 3
  • 2
  • 2
TopValue
70
HiddenCells
  • {"r":1,"c":1,"v":26}
  • {"r":3,"c":1,"v":12}
  • {"r":4,"c":4,"v":2}
  • {"r":4,"c":2,"v":3}
  • {"r":3,"c":2,"v":5}
  • {"r":3,"c":3,"v":4}
  • {"r":4,"c":0,"v":6}
  • {"r":2,"c":1,"v":17}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [89] → [40, _] → [_, _, _] → [13, 8, 11, _] → [6, _, _, _, 9]

Show answer

Answer: Row3[3]=30, Row2[2]=49, Row5[2]=7, Row5[4]=10, Row4[4]=19, Row3[1]=21, Row3[2]=19, Row5[3]=1

SubType
number-pyramid
Difficulty
hard
Levels
  • [89]
  • [40,49]
  • [21,19,30]
  • [13,8,11,19]
  • [6,7,1,10,9]
Base
  • 6
  • 7
  • 1
  • 10
  • 9
TopValue
89
HiddenCells
  • {"r":2,"c":2,"v":30}
  • {"r":1,"c":1,"v":49}
  • {"r":4,"c":1,"v":7}
  • {"r":4,"c":3,"v":10}
  • {"r":3,"c":3,"v":19}
  • {"r":2,"c":0,"v":21}
  • {"r":2,"c":1,"v":19}
  • {"r":4,"c":2,"v":1}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [47, 43] → [_, _, _] → [_, _, 10, 11] → [_, _, 3, 7, 4]

Show answer

Answer: Row3[1]=25, Row4[2]=12, Row5[2]=9, Row3[3]=21, Row3[2]=22, Row1[1]=90, Row5[1]=4, Row4[1]=13

SubType
number-pyramid
Difficulty
hard
Levels
  • [90]
  • [47,43]
  • [25,22,21]
  • [13,12,10,11]
  • [4,9,3,7,4]
Base
  • 4
  • 9
  • 3
  • 7
  • 4
TopValue
90
HiddenCells
  • {"r":2,"c":0,"v":25}
  • {"r":3,"c":1,"v":12}
  • {"r":4,"c":1,"v":9}
  • {"r":2,"c":2,"v":21}
  • {"r":2,"c":1,"v":22}
  • {"r":0,"c":0,"v":90}
  • {"r":4,"c":0,"v":4}
  • {"r":3,"c":0,"v":13}