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): [_] → [45, _] → [20, 25, 23] → [_, _, _, _] → [3, _, 9, 3, _]

Show answer

Answer: Row4[3]=12, Row5[2]=4, Row2[2]=48, Row4[1]=7, Row4[4]=11, Row1[1]=93, Row5[5]=8, Row4[2]=13

SubType
number-pyramid
Difficulty
hard
Levels
  • [93]
  • [45,48]
  • [20,25,23]
  • [7,13,12,11]
  • [3,4,9,3,8]
Base
  • 3
  • 4
  • 9
  • 3
  • 8
TopValue
93
HiddenCells
  • {"r":3,"c":2,"v":12}
  • {"r":4,"c":1,"v":4}
  • {"r":1,"c":1,"v":48}
  • {"r":3,"c":0,"v":7}
  • {"r":3,"c":3,"v":11}
  • {"r":0,"c":0,"v":93}
  • {"r":4,"c":4,"v":8}
  • {"r":3,"c":1,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [38, _, 21] → [_, _, 13, 8] → [10, _, 8, 5, _]

Show answer

Answer: Row4[2]=18, Row4[1]=20, Row5[5]=3, Row3[2]=31, Row5[2]=10, Row1[1]=121, Row2[2]=52, Row2[1]=69

SubType
number-pyramid
Difficulty
hard
Levels
  • [121]
  • [69,52]
  • [38,31,21]
  • [20,18,13,8]
  • [10,10,8,5,3]
Base
  • 10
  • 10
  • 8
  • 5
  • 3
TopValue
121
HiddenCells
  • {"r":3,"c":1,"v":18}
  • {"r":3,"c":0,"v":20}
  • {"r":4,"c":4,"v":3}
  • {"r":2,"c":1,"v":31}
  • {"r":4,"c":1,"v":10}
  • {"r":0,"c":0,"v":121}
  • {"r":1,"c":1,"v":52}
  • {"r":1,"c":0,"v":69}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [_, 19, _] → [_, 9, 10, _] → [3, 1, 8, _, 2]

Show answer

Answer: Row3[1]=13, Row5[4]=2, Row1[1]=65, Row4[1]=4, Row3[3]=14, Row2[2]=33, Row4[4]=4, Row2[1]=32

SubType
number-pyramid
Difficulty
hard
Levels
  • [65]
  • [32,33]
  • [13,19,14]
  • [4,9,10,4]
  • [3,1,8,2,2]
Base
  • 3
  • 1
  • 8
  • 2
  • 2
TopValue
65
HiddenCells
  • {"r":2,"c":0,"v":13}
  • {"r":4,"c":3,"v":2}
  • {"r":0,"c":0,"v":65}
  • {"r":3,"c":0,"v":4}
  • {"r":2,"c":2,"v":14}
  • {"r":1,"c":1,"v":33}
  • {"r":3,"c":3,"v":4}
  • {"r":1,"c":0,"v":32}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [92] → [38, 54] → [16, _, _] → [_, _, _, 18] → [_, 3, _, _, 9]

Show answer

Answer: Row4[3]=14, Row3[3]=32, Row4[2]=8, Row4[1]=8, Row3[2]=22, Row5[4]=9, Row5[3]=5, Row5[1]=5

SubType
number-pyramid
Difficulty
hard
Levels
  • [92]
  • [38,54]
  • [16,22,32]
  • [8,8,14,18]
  • [5,3,5,9,9]
Base
  • 5
  • 3
  • 5
  • 9
  • 9
TopValue
92
HiddenCells
  • {"r":3,"c":2,"v":14}
  • {"r":2,"c":2,"v":32}
  • {"r":3,"c":1,"v":8}
  • {"r":3,"c":0,"v":8}
  • {"r":2,"c":1,"v":22}
  • {"r":4,"c":3,"v":9}
  • {"r":4,"c":2,"v":5}
  • {"r":4,"c":0,"v":5}