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): [20] → [8, _] → [1, _, 5]

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Answer: Row2[2]=12, Row3[2]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [8,12]
  • [1,7,5]
Base
  • 1
  • 7
  • 5
TopValue
20
HiddenCells
  • {"r":1,"c":1,"v":12}
  • {"r":2,"c":1,"v":7}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 10] → [6, 6, 4]

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Answer: Row1[1]=22, Row2[1]=12

SubType
number-pyramid
Difficulty
starter
Levels
  • [22]
  • [12,10]
  • [6,6,4]
Base
  • 6
  • 6
  • 4
TopValue
22
HiddenCells
  • {"r":0,"c":0,"v":22}
  • {"r":1,"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): [_] → [14, 6] → [9, 5, _]

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Answer: Row3[3]=1, Row1[1]=20

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [14,6]
  • [9,5,1]
Base
  • 9
  • 5
  • 1
TopValue
20
HiddenCells
  • {"r":2,"c":2,"v":1}
  • {"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): [18] → [12, _] → [_, 2, 4]

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Answer: Row3[1]=10, Row2[2]=6

SubType
number-pyramid
Difficulty
starter
Levels
  • [18]
  • [12,6]
  • [10,2,4]
Base
  • 10
  • 2
  • 4
TopValue
18
HiddenCells
  • {"r":2,"c":0,"v":10}
  • {"r":1,"c":1,"v":6}