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): [25] → [_, 15] → [_, 7, 8]

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Answer: Row3[1]=3, Row2[1]=10

SubType
number-pyramid
Difficulty
starter
Levels
  • [25]
  • [10,15]
  • [3,7,8]
Base
  • 3
  • 7
  • 8
TopValue
25
HiddenCells
  • {"r":2,"c":0,"v":3}
  • {"r":1,"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): [_] → [_, 6] → [1, 5, 1]

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Answer: Row2[1]=6, Row1[1]=12

SubType
number-pyramid
Difficulty
starter
Levels
  • [12]
  • [6,6]
  • [1,5,1]
Base
  • 1
  • 5
  • 1
TopValue
12
HiddenCells
  • {"r":1,"c":0,"v":6}
  • {"r":0,"c":0,"v":12}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [9, 12] → [2, _, 5]

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Answer: Row3[2]=7, Row1[1]=21

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [9,12]
  • [2,7,5]
Base
  • 2
  • 7
  • 5
TopValue
21
HiddenCells
  • {"r":2,"c":1,"v":7}
  • {"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): [_] → [_, 7] → [9, 5, 2]

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Answer: Row2[1]=14, Row1[1]=21

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [14,7]
  • [9,5,2]
Base
  • 9
  • 5
  • 2
TopValue
21
HiddenCells
  • {"r":1,"c":0,"v":14}
  • {"r":0,"c":0,"v":21}