expert Set 21 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [30] → [13, _] → [4, _, 8]

Show answer

Answer: Row2[2]=17, Row3[2]=9

SubType
number-pyramid
Difficulty
expert
Levels
  • [30]
  • [13,17]
  • [4,9,8]
Base
  • 4
  • 9
  • 8
TopValue
30
HiddenCells
  • {"r":1,"c":1,"v":17}
  • {"r":2,"c":1,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [15, 15] → [_, 9, 6]

Show answer

Answer: Row3[1]=6, Row1[1]=30

SubType
number-pyramid
Difficulty
expert
Levels
  • [30]
  • [15,15]
  • [6,9,6]
Base
  • 6
  • 9
  • 6
TopValue
30
HiddenCells
  • {"r":2,"c":0,"v":6}
  • {"r":0,"c":0,"v":30}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [25] → [_, 13] → [8, 4, _]

Show answer

Answer: Row3[3]=9, Row2[1]=12

SubType
number-pyramid
Difficulty
expert
Levels
  • [25]
  • [12,13]
  • [8,4,9]
Base
  • 8
  • 4
  • 9
TopValue
25
HiddenCells
  • {"r":2,"c":2,"v":9}
  • {"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): [16] → [10, 6] → [_, _, 4]

Show answer

Answer: Row3[2]=2, Row3[1]=8

SubType
number-pyramid
Difficulty
expert
Levels
  • [16]
  • [10,6]
  • [8,2,4]
Base
  • 8
  • 2
  • 4
TopValue
16
HiddenCells
  • {"r":2,"c":1,"v":2}
  • {"r":2,"c":0,"v":8}