medium Set 87 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [18] → [_, 5] → [10, _, 2] → [_, _, 1, 1]

Show answer

Answer: Row2[1]=13, Row4[2]=2, Row3[2]=3, Row4[1]=8

SubType
number-pyramid
Difficulty
medium
Levels
  • [18]
  • [13,5]
  • [10,3,2]
  • [8,2,1,1]
Base
  • 8
  • 2
  • 1
  • 1
TopValue
18
HiddenCells
  • {"r":1,"c":0,"v":13}
  • {"r":3,"c":1,"v":2}
  • {"r":2,"c":1,"v":3}
  • {"r":3,"c":0,"v":8}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [16, 19] → [6, 10, _] → [_, 3, 7, _]

Show answer

Answer: Row4[4]=2, Row3[3]=9, Row4[1]=3, Row1[1]=35

SubType
number-pyramid
Difficulty
medium
Levels
  • [35]
  • [16,19]
  • [6,10,9]
  • [3,3,7,2]
Base
  • 3
  • 3
  • 7
  • 2
TopValue
35
HiddenCells
  • {"r":3,"c":3,"v":2}
  • {"r":2,"c":2,"v":9}
  • {"r":3,"c":0,"v":3}
  • {"r":0,"c":0,"v":35}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [31, _] → [14, _, 17] → [_, 10, 7, 10]

Show answer

Answer: Row1[1]=65, Row2[2]=34, Row3[2]=17, Row4[1]=4

SubType
number-pyramid
Difficulty
medium
Levels
  • [65]
  • [31,34]
  • [14,17,17]
  • [4,10,7,10]
Base
  • 4
  • 10
  • 7
  • 10
TopValue
65
HiddenCells
  • {"r":0,"c":0,"v":65}
  • {"r":1,"c":1,"v":34}
  • {"r":2,"c":1,"v":17}
  • {"r":3,"c":0,"v":4}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [20] → [_, _] → [4, 3, 10] → [2, _, 1, _]

Show answer

Answer: Row2[1]=7, Row4[4]=9, Row2[2]=13, Row4[2]=2

SubType
number-pyramid
Difficulty
medium
Levels
  • [20]
  • [7,13]
  • [4,3,10]
  • [2,2,1,9]
Base
  • 2
  • 2
  • 1
  • 9
TopValue
20
HiddenCells
  • {"r":1,"c":0,"v":7}
  • {"r":3,"c":3,"v":9}
  • {"r":1,"c":1,"v":13}
  • {"r":3,"c":1,"v":2}