medium 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): [42] → [_, 21] → [_, 9, 12] → [7, 5, _, _]

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Answer: Row3[1]=12, Row4[4]=8, Row4[3]=4, Row2[1]=21

SubType
number-pyramid
Difficulty
medium
Levels
  • [42]
  • [21,21]
  • [12,9,12]
  • [7,5,4,8]
Base
  • 7
  • 5
  • 4
  • 8
TopValue
42
HiddenCells
  • {"r":2,"c":0,"v":12}
  • {"r":3,"c":3,"v":8}
  • {"r":3,"c":2,"v":4}
  • {"r":1,"c":0,"v":21}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [49] → [21, _] → [9, _, _] → [_, 3, 9, 7]

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Answer: Row3[2]=12, Row3[3]=16, Row4[1]=6, Row2[2]=28

SubType
number-pyramid
Difficulty
medium
Levels
  • [49]
  • [21,28]
  • [9,12,16]
  • [6,3,9,7]
Base
  • 6
  • 3
  • 9
  • 7
TopValue
49
HiddenCells
  • {"r":2,"c":1,"v":12}
  • {"r":2,"c":2,"v":16}
  • {"r":3,"c":0,"v":6}
  • {"r":1,"c":1,"v":28}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [46] → [_, 21] → [_, _, 9] → [5, _, 4, 5]

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Answer: Row3[2]=12, Row4[2]=8, Row3[1]=13, Row2[1]=25

SubType
number-pyramid
Difficulty
medium
Levels
  • [46]
  • [25,21]
  • [13,12,9]
  • [5,8,4,5]
Base
  • 5
  • 8
  • 4
  • 5
TopValue
46
HiddenCells
  • {"r":2,"c":1,"v":12}
  • {"r":3,"c":1,"v":8}
  • {"r":2,"c":0,"v":13}
  • {"r":1,"c":0,"v":25}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [36] → [_, _] → [10, _, 8] → [4, 6, _, 5]

Show answer

Answer: Row4[3]=3, Row2[2]=17, Row3[2]=9, Row2[1]=19

SubType
number-pyramid
Difficulty
medium
Levels
  • [36]
  • [19,17]
  • [10,9,8]
  • [4,6,3,5]
Base
  • 4
  • 6
  • 3
  • 5
TopValue
36
HiddenCells
  • {"r":3,"c":2,"v":3}
  • {"r":1,"c":1,"v":17}
  • {"r":2,"c":1,"v":9}
  • {"r":1,"c":0,"v":19}