easy Set 86 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [13, 18] → [4, _, 9]

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Answer: Row3[2]=9, Row1[1]=31

SubType
number-pyramid
Difficulty
easy
Levels
  • [31]
  • [13,18]
  • [4,9,9]
Base
  • 4
  • 9
  • 9
TopValue
31
HiddenCells
  • {"r":2,"c":1,"v":9}
  • {"r":0,"c":0,"v":31}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [15, 16] → [_, 7, 9]

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Answer: Row3[1]=8, Row1[1]=31

SubType
number-pyramid
Difficulty
easy
Levels
  • [31]
  • [15,16]
  • [8,7,9]
Base
  • 8
  • 7
  • 9
TopValue
31
HiddenCells
  • {"r":2,"c":0,"v":8}
  • {"r":0,"c":0,"v":31}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [34] → [_, 17] → [8, _, 8]

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

SubType
number-pyramid
Difficulty
easy
Levels
  • [34]
  • [17,17]
  • [8,9,8]
Base
  • 8
  • 9
  • 8
TopValue
34
HiddenCells
  • {"r":1,"c":0,"v":17}
  • {"r":2,"c":1,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [9, 12] → [_, 8, _]

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

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