medium Set 89 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [28] → [15, _] → [_, 3, 10] → [_, 2, 1, _]

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Answer: Row3[1]=12, Row2[2]=13, Row4[4]=9, Row4[1]=10

SubType
number-pyramid
Difficulty
medium
Levels
  • [28]
  • [15,13]
  • [12,3,10]
  • [10,2,1,9]
Base
  • 10
  • 2
  • 1
  • 9
TopValue
28
HiddenCells
  • {"r":2,"c":0,"v":12}
  • {"r":1,"c":1,"v":13}
  • {"r":3,"c":3,"v":9}
  • {"r":3,"c":0,"v":10}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [11, _] → [5, 6, 8] → [4, 1, _, _]

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Answer: Row4[3]=5, Row1[1]=25, Row4[4]=3, Row2[2]=14

SubType
number-pyramid
Difficulty
medium
Levels
  • [25]
  • [11,14]
  • [5,6,8]
  • [4,1,5,3]
Base
  • 4
  • 1
  • 5
  • 3
TopValue
25
HiddenCells
  • {"r":3,"c":2,"v":5}
  • {"r":0,"c":0,"v":25}
  • {"r":3,"c":3,"v":3}
  • {"r":1,"c":1,"v":14}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [60] → [33, _] → [16, _, _] → [6, 10, 7, _]

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Answer: Row3[2]=17, Row2[2]=27, Row4[4]=3, Row3[3]=10

SubType
number-pyramid
Difficulty
medium
Levels
  • [60]
  • [33,27]
  • [16,17,10]
  • [6,10,7,3]
Base
  • 6
  • 10
  • 7
  • 3
TopValue
60
HiddenCells
  • {"r":2,"c":1,"v":17}
  • {"r":1,"c":1,"v":27}
  • {"r":3,"c":3,"v":3}
  • {"r":2,"c":2,"v":10}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [30] → [12, _] → [4, _, 10] → [_, 1, _, 3]

Show answer

Answer: Row4[1]=3, Row3[2]=8, Row4[3]=7, Row2[2]=18

SubType
number-pyramid
Difficulty
medium
Levels
  • [30]
  • [12,18]
  • [4,8,10]
  • [3,1,7,3]
Base
  • 3
  • 1
  • 7
  • 3
TopValue
30
HiddenCells
  • {"r":3,"c":0,"v":3}
  • {"r":2,"c":1,"v":8}
  • {"r":3,"c":2,"v":7}
  • {"r":1,"c":1,"v":18}