easy Set 99 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [20] → [10, _] → [9, _, 9]

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

SubType
number-pyramid
Difficulty
easy
Levels
  • [20]
  • [10,10]
  • [9,1,9]
Base
  • 9
  • 1
  • 9
TopValue
20
HiddenCells
  • {"r":1,"c":1,"v":10}
  • {"r":2,"c":1,"v":1}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [19] → [10, _] → [_, 4, 5]

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Answer: Row2[2]=9, Row3[1]=6

SubType
number-pyramid
Difficulty
easy
Levels
  • [19]
  • [10,9]
  • [6,4,5]
Base
  • 6
  • 4
  • 5
TopValue
19
HiddenCells
  • {"r":1,"c":1,"v":9}
  • {"r":2,"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): [17] → [_, 8] → [_, 5, 3]

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Answer: Row3[1]=4, Row2[1]=9

SubType
number-pyramid
Difficulty
easy
Levels
  • [17]
  • [9,8]
  • [4,5,3]
Base
  • 4
  • 5
  • 3
TopValue
17
HiddenCells
  • {"r":2,"c":0,"v":4}
  • {"r":1,"c":0,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 13] → [5, 3, 10]

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Answer: Row1[1]=21, Row2[1]=8

SubType
number-pyramid
Difficulty
easy
Levels
  • [21]
  • [8,13]
  • [5,3,10]
Base
  • 5
  • 3
  • 10
TopValue
21
HiddenCells
  • {"r":0,"c":0,"v":21}
  • {"r":1,"c":0,"v":8}