expert Set 90 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [15] → [6, _] → [2, 4, _]

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Answer: Row2[2]=9, Row3[3]=5

SubType
number-pyramid
Difficulty
expert
Levels
  • [15]
  • [6,9]
  • [2,4,5]
Base
  • 2
  • 4
  • 5
TopValue
15
HiddenCells
  • {"r":1,"c":1,"v":9}
  • {"r":2,"c":2,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [7, 12] → [_, 4, 8]

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Answer: Row1[1]=19, Row3[1]=3

SubType
number-pyramid
Difficulty
expert
Levels
  • [19]
  • [7,12]
  • [3,4,8]
Base
  • 3
  • 4
  • 8
TopValue
19
HiddenCells
  • {"r":0,"c":0,"v":19}
  • {"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): [29] → [13, _] → [7, 6, _]

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Answer: Row2[2]=16, Row3[3]=10

SubType
number-pyramid
Difficulty
expert
Levels
  • [29]
  • [13,16]
  • [7,6,10]
Base
  • 7
  • 6
  • 10
TopValue
29
HiddenCells
  • {"r":1,"c":1,"v":16}
  • {"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): [21] → [_, 8] → [_, 7, 1]

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Answer: Row3[1]=6, Row2[1]=13

SubType
number-pyramid
Difficulty
expert
Levels
  • [21]
  • [13,8]
  • [6,7,1]
Base
  • 6
  • 7
  • 1
TopValue
21
HiddenCells
  • {"r":2,"c":0,"v":6}
  • {"r":1,"c":0,"v":13}