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): [18] → [_, 9] → [2, 7, _]

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Answer: Row2[1]=9, Row3[3]=2

SubType
number-pyramid
Difficulty
starter
Levels
  • [18]
  • [9,9]
  • [2,7,2]
Base
  • 2
  • 7
  • 2
TopValue
18
HiddenCells
  • {"r":1,"c":0,"v":9}
  • {"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): [31] → [_, 13] → [9, 9, _]

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Answer: Row2[1]=18, Row3[3]=4

SubType
number-pyramid
Difficulty
starter
Levels
  • [31]
  • [18,13]
  • [9,9,4]
Base
  • 9
  • 9
  • 4
TopValue
31
HiddenCells
  • {"r":1,"c":0,"v":18}
  • {"r":2,"c":2,"v":4}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [24] → [12, 12] → [5, _, _]

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Answer: Row3[2]=7, Row3[3]=5

SubType
number-pyramid
Difficulty
starter
Levels
  • [24]
  • [12,12]
  • [5,7,5]
Base
  • 5
  • 7
  • 5
TopValue
24
HiddenCells
  • {"r":2,"c":1,"v":7}
  • {"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): [27] → [_, _] → [2, 8, 9]

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Answer: Row2[2]=17, Row2[1]=10

SubType
number-pyramid
Difficulty
starter
Levels
  • [27]
  • [10,17]
  • [2,8,9]
Base
  • 2
  • 8
  • 9
TopValue
27
HiddenCells
  • {"r":1,"c":1,"v":17}
  • {"r":1,"c":0,"v":10}