starter Set 18 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [18] → [9, 9] → [_, _, 5]

Show answer

Answer: Row3[1]=5, Row3[2]=4

SubType
number-pyramid
Difficulty
starter
Levels
  • [18]
  • [9,9]
  • [5,4,5]
Base
  • 5
  • 4
  • 5
TopValue
18
HiddenCells
  • {"r":2,"c":0,"v":5}
  • {"r":2,"c":1,"v":4}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [14] → [9, 5] → [_, _, 3]

Show answer

Answer: Row3[2]=2, Row3[1]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [14]
  • [9,5]
  • [7,2,3]
Base
  • 7
  • 2
  • 3
TopValue
14
HiddenCells
  • {"r":2,"c":1,"v":2}
  • {"r":2,"c":0,"v":7}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [25] → [11, _] → [_, 5, 9]

Show answer

Answer: Row2[2]=14, Row3[1]=6

SubType
number-pyramid
Difficulty
starter
Levels
  • [25]
  • [11,14]
  • [6,5,9]
Base
  • 6
  • 5
  • 9
TopValue
25
HiddenCells
  • {"r":1,"c":1,"v":14}
  • {"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): [_] → [14, 14] → [_, 6, 8]

Show answer

Answer: Row1[1]=28, Row3[1]=8

SubType
number-pyramid
Difficulty
starter
Levels
  • [28]
  • [14,14]
  • [8,6,8]
Base
  • 8
  • 6
  • 8
TopValue
28
HiddenCells
  • {"r":0,"c":0,"v":28}
  • {"r":2,"c":0,"v":8}