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): [23] → [9, _] → [4, _, 9]

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Answer: Row3[2]=5, Row2[2]=14

SubType
number-pyramid
Difficulty
starter
Levels
  • [23]
  • [9,14]
  • [4,5,9]
Base
  • 4
  • 5
  • 9
TopValue
23
HiddenCells
  • {"r":2,"c":1,"v":5}
  • {"r":1,"c":1,"v":14}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [18] → [_, 5] → [_, 3, 2]

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Answer: Row2[1]=13, Row3[1]=10

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

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [25] → [10, 15] → [_, _, 10]

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

SubType
number-pyramid
Difficulty
starter
Levels
  • [25]
  • [10,15]
  • [5,5,10]
Base
  • 5
  • 5
  • 10
TopValue
25
HiddenCells
  • {"r":2,"c":1,"v":5}
  • {"r":2,"c":0,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [7, 10] → [_, 3, 7]

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Answer: Row3[1]=4, Row1[1]=17

SubType
number-pyramid
Difficulty
starter
Levels
  • [17]
  • [7,10]
  • [4,3,7]
Base
  • 4
  • 3
  • 7
TopValue
17
HiddenCells
  • {"r":2,"c":0,"v":4}
  • {"r":0,"c":0,"v":17}