expert Set 88 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [10, 5] → [9, _, 4]

Show answer

Answer: Row3[2]=1, Row1[1]=15

SubType
number-pyramid
Difficulty
expert
Levels
  • [15]
  • [10,5]
  • [9,1,4]
Base
  • 9
  • 1
  • 4
TopValue
15
HiddenCells
  • {"r":2,"c":1,"v":1}
  • {"r":0,"c":0,"v":15}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [20] → [11, _] → [_, 3, 6]

Show answer

Answer: Row2[2]=9, Row3[1]=8

SubType
number-pyramid
Difficulty
expert
Levels
  • [20]
  • [11,9]
  • [8,3,6]
Base
  • 8
  • 3
  • 6
TopValue
20
HiddenCells
  • {"r":1,"c":1,"v":9}
  • {"r":2,"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): [_] → [12, _] → [7, 5, 8]

Show answer

Answer: Row1[1]=25, Row2[2]=13

SubType
number-pyramid
Difficulty
expert
Levels
  • [25]
  • [12,13]
  • [7,5,8]
Base
  • 7
  • 5
  • 8
TopValue
25
HiddenCells
  • {"r":0,"c":0,"v":25}
  • {"r":1,"c":1,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [28] → [_, 11] → [9, 8, _]

Show answer

Answer: Row2[1]=17, Row3[3]=3

SubType
number-pyramid
Difficulty
expert
Levels
  • [28]
  • [17,11]
  • [9,8,3]
Base
  • 9
  • 8
  • 3
TopValue
28
HiddenCells
  • {"r":1,"c":0,"v":17}
  • {"r":2,"c":2,"v":3}