starter Set 81 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [10, _] → [1, 9, 1]

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Answer: Row2[2]=10, Row1[1]=20

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [10,10]
  • [1,9,1]
Base
  • 1
  • 9
  • 1
TopValue
20
HiddenCells
  • {"r":1,"c":1,"v":10}
  • {"r":0,"c":0,"v":20}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [15] → [10, 5] → [_, 1, _]

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Answer: Row3[3]=4, Row3[1]=9

SubType
number-pyramid
Difficulty
starter
Levels
  • [15]
  • [10,5]
  • [9,1,4]
Base
  • 9
  • 1
  • 4
TopValue
15
HiddenCells
  • {"r":2,"c":2,"v":4}
  • {"r":2,"c":0,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [25] → [16, 9] → [10, _, _]

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Answer: Row3[3]=3, Row3[2]=6

SubType
number-pyramid
Difficulty
starter
Levels
  • [25]
  • [16,9]
  • [10,6,3]
Base
  • 10
  • 6
  • 3
TopValue
25
HiddenCells
  • {"r":2,"c":2,"v":3}
  • {"r":2,"c":1,"v":6}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [36] → [20, _] → [10, 10, _]

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Answer: Row2[2]=16, Row3[3]=6

SubType
number-pyramid
Difficulty
starter
Levels
  • [36]
  • [20,16]
  • [10,10,6]
Base
  • 10
  • 10
  • 6
TopValue
36
HiddenCells
  • {"r":1,"c":1,"v":16}
  • {"r":2,"c":2,"v":6}