starter 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): [8] → [_, 2] → [5, 1, _]

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Answer: Row3[3]=1, Row2[1]=6

SubType
number-pyramid
Difficulty
starter
Levels
  • [8]
  • [6,2]
  • [5,1,1]
Base
  • 5
  • 1
  • 1
TopValue
8
HiddenCells
  • {"r":2,"c":2,"v":1}
  • {"r":1,"c":0,"v":6}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [9] → [4, _] → [1, 3, _]

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

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

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [28] → [15, _] → [9, _, 7]

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Answer: Row3[2]=6, Row2[2]=13

SubType
number-pyramid
Difficulty
starter
Levels
  • [28]
  • [15,13]
  • [9,6,7]
Base
  • 9
  • 6
  • 7
TopValue
28
HiddenCells
  • {"r":2,"c":1,"v":6}
  • {"r":1,"c":1,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [27] → [_, 12] → [_, 8, 4]

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Answer: Row2[1]=15, Row3[1]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [27]
  • [15,12]
  • [7,8,4]
Base
  • 7
  • 8
  • 4
TopValue
27
HiddenCells
  • {"r":1,"c":0,"v":15}
  • {"r":2,"c":0,"v":7}