expert 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): [_] → [4, _] → [1, 3, 4]

Show answer

Answer: Row2[2]=7, Row1[1]=11

SubType
number-pyramid
Difficulty
expert
Levels
  • [11]
  • [4,7]
  • [1,3,4]
Base
  • 1
  • 3
  • 4
TopValue
11
HiddenCells
  • {"r":1,"c":1,"v":7}
  • {"r":0,"c":0,"v":11}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [11] → [5, _] → [2, _, 3]

Show answer

Answer: Row2[2]=6, Row3[2]=3

SubType
number-pyramid
Difficulty
expert
Levels
  • [11]
  • [5,6]
  • [2,3,3]
Base
  • 2
  • 3
  • 3
TopValue
11
HiddenCells
  • {"r":1,"c":1,"v":6}
  • {"r":2,"c":1,"v":3}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [25] → [11, 14] → [_, _, 8]

Show answer

Answer: Row3[2]=6, Row3[1]=5

SubType
number-pyramid
Difficulty
expert
Levels
  • [25]
  • [11,14]
  • [5,6,8]
Base
  • 5
  • 6
  • 8
TopValue
25
HiddenCells
  • {"r":2,"c":1,"v":6}
  • {"r":2,"c":0,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [14, 7] → [10, 4, _]

Show answer

Answer: Row3[3]=3, Row1[1]=21

SubType
number-pyramid
Difficulty
expert
Levels
  • [21]
  • [14,7]
  • [10,4,3]
Base
  • 10
  • 4
  • 3
TopValue
21
HiddenCells
  • {"r":2,"c":2,"v":3}
  • {"r":0,"c":0,"v":21}