starter Set 99 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [9, 12] → [5, 4, _]

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Answer: Row3[3]=8, Row1[1]=21

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [9,12]
  • [5,4,8]
Base
  • 5
  • 4
  • 8
TopValue
21
HiddenCells
  • {"r":2,"c":2,"v":8}
  • {"r":0,"c":0,"v":21}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [30] → [_, 14] → [10, _, 8]

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Answer: Row3[2]=6, Row2[1]=16

SubType
number-pyramid
Difficulty
starter
Levels
  • [30]
  • [16,14]
  • [10,6,8]
Base
  • 10
  • 6
  • 8
TopValue
30
HiddenCells
  • {"r":2,"c":1,"v":6}
  • {"r":1,"c":0,"v":16}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [12] → [_, 5] → [5, 2, _]

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Answer: Row2[1]=7, Row3[3]=3

SubType
number-pyramid
Difficulty
starter
Levels
  • [12]
  • [7,5]
  • [5,2,3]
Base
  • 5
  • 2
  • 3
TopValue
12
HiddenCells
  • {"r":1,"c":0,"v":7}
  • {"r":2,"c":2,"v":3}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [_, 6] → [_, 5, 1]

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Answer: Row3[1]=10, Row2[1]=15

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [15,6]
  • [10,5,1]
Base
  • 10
  • 5
  • 1
TopValue
21
HiddenCells
  • {"r":2,"c":0,"v":10}
  • {"r":1,"c":0,"v":15}