expert Set 71 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] → [4, _, 9]

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Answer: Row2[1]=13, Row3[2]=9

SubType
number-pyramid
Difficulty
expert
Levels
  • [31]
  • [13,18]
  • [4,9,9]
Base
  • 4
  • 9
  • 9
TopValue
31
HiddenCells
  • {"r":1,"c":0,"v":13}
  • {"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): [24] → [12, _] → [9, _, 9]

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Answer: Row3[2]=3, Row2[2]=12

SubType
number-pyramid
Difficulty
expert
Levels
  • [24]
  • [12,12]
  • [9,3,9]
Base
  • 9
  • 3
  • 9
TopValue
24
HiddenCells
  • {"r":2,"c":1,"v":3}
  • {"r":1,"c":1,"v":12}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [9] → [4, _] → [_, 2, 3]

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Answer: Row3[1]=2, Row2[2]=5

SubType
number-pyramid
Difficulty
expert
Levels
  • [9]
  • [4,5]
  • [2,2,3]
Base
  • 2
  • 2
  • 3
TopValue
9
HiddenCells
  • {"r":2,"c":0,"v":2}
  • {"r":1,"c":1,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [18] → [_, _] → [10, 3, 2]

Show answer

Answer: Row2[1]=13, Row2[2]=5

SubType
number-pyramid
Difficulty
expert
Levels
  • [18]
  • [13,5]
  • [10,3,2]
Base
  • 10
  • 3
  • 2
TopValue
18
HiddenCells
  • {"r":1,"c":0,"v":13}
  • {"r":1,"c":1,"v":5}