starter Set 87 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [15, _] → [6, 9, 7]

Show answer

Answer: Row2[2]=16, Row1[1]=31

SubType
number-pyramid
Difficulty
starter
Levels
  • [31]
  • [15,16]
  • [6,9,7]
Base
  • 6
  • 9
  • 7
TopValue
31
HiddenCells
  • {"r":1,"c":1,"v":16}
  • {"r":0,"c":0,"v":31}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [24] → [_, 13] → [5, 6, _]

Show answer

Answer: Row2[1]=11, Row3[3]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [24]
  • [11,13]
  • [5,6,7]
Base
  • 5
  • 6
  • 7
TopValue
24
HiddenCells
  • {"r":1,"c":0,"v":11}
  • {"r":2,"c":2,"v":7}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [8] → [_, _] → [3, 1, 3]

Show answer

Answer: Row2[2]=4, Row2[1]=4

SubType
number-pyramid
Difficulty
starter
Levels
  • [8]
  • [4,4]
  • [3,1,3]
Base
  • 3
  • 1
  • 3
TopValue
8
HiddenCells
  • {"r":1,"c":1,"v":4}
  • {"r":1,"c":0,"v":4}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [8, _] → [_, 4, 9]

Show answer

Answer: Row3[1]=4, Row2[2]=13

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [8,13]
  • [4,4,9]
Base
  • 4
  • 4
  • 9
TopValue
21
HiddenCells
  • {"r":2,"c":0,"v":4}
  • {"r":1,"c":1,"v":13}