expert Set 91 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [31] → [18, _] → [_, 10, 3]

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

SubType
number-pyramid
Difficulty
expert
Levels
  • [31]
  • [18,13]
  • [8,10,3]
Base
  • 8
  • 10
  • 3
TopValue
31
HiddenCells
  • {"r":2,"c":0,"v":8}
  • {"r":1,"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): [25] → [11, 14] → [_, 10, _]

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Answer: Row3[1]=1, Row3[3]=4

SubType
number-pyramid
Difficulty
expert
Levels
  • [25]
  • [11,14]
  • [1,10,4]
Base
  • 1
  • 10
  • 4
TopValue
25
HiddenCells
  • {"r":2,"c":0,"v":1}
  • {"r":2,"c":2,"v":4}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [9, 9] → [_, 6, 3]

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Answer: Row1[1]=18, Row3[1]=3

SubType
number-pyramid
Difficulty
expert
Levels
  • [18]
  • [9,9]
  • [3,6,3]
Base
  • 3
  • 6
  • 3
TopValue
18
HiddenCells
  • {"r":0,"c":0,"v":18}
  • {"r":2,"c":0,"v":3}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [10, 17] → [_, 8, 9]

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Answer: Row3[1]=2, Row1[1]=27

SubType
number-pyramid
Difficulty
expert
Levels
  • [27]
  • [10,17]
  • [2,8,9]
Base
  • 2
  • 8
  • 9
TopValue
27
HiddenCells
  • {"r":2,"c":0,"v":2}
  • {"r":0,"c":0,"v":27}