expert Set 13 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [13, _] → [8, 5, _]

Show answer

Answer: Row3[3]=3, Row2[2]=8

SubType
number-pyramid
Difficulty
expert
Levels
  • [21]
  • [13,8]
  • [8,5,3]
Base
  • 8
  • 5
  • 3
TopValue
21
HiddenCells
  • {"r":2,"c":2,"v":3}
  • {"r":1,"c":1,"v":8}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [20] → [9, 11] → [_, _, 8]

Show answer

Answer: Row3[2]=3, Row3[1]=6

SubType
number-pyramid
Difficulty
expert
Levels
  • [20]
  • [9,11]
  • [6,3,8]
Base
  • 6
  • 3
  • 8
TopValue
20
HiddenCells
  • {"r":2,"c":1,"v":3}
  • {"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): [_] → [10, _] → [2, 8, 3]

Show answer

Answer: Row2[2]=11, Row1[1]=21

SubType
number-pyramid
Difficulty
expert
Levels
  • [21]
  • [10,11]
  • [2,8,3]
Base
  • 2
  • 8
  • 3
TopValue
21
HiddenCells
  • {"r":1,"c":1,"v":11}
  • {"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): [_] → [9, 15] → [3, _, 9]

Show answer

Answer: Row3[2]=6, Row1[1]=24

SubType
number-pyramid
Difficulty
expert
Levels
  • [24]
  • [9,15]
  • [3,6,9]
Base
  • 3
  • 6
  • 9
TopValue
24
HiddenCells
  • {"r":2,"c":1,"v":6}
  • {"r":0,"c":0,"v":24}