starter Set 61 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [13, _] → [5, 8, 10]

Show answer

Answer: Row1[1]=31, Row2[2]=18

SubType
number-pyramid
Difficulty
starter
Levels
  • [31]
  • [13,18]
  • [5,8,10]
Base
  • 5
  • 8
  • 10
TopValue
31
HiddenCells
  • {"r":0,"c":0,"v":31}
  • {"r":1,"c":1,"v":18}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [19] → [_, 8] → [6, _, 3]

Show answer

Answer: Row2[1]=11, Row3[2]=5

SubType
number-pyramid
Difficulty
starter
Levels
  • [19]
  • [11,8]
  • [6,5,3]
Base
  • 6
  • 5
  • 3
TopValue
19
HiddenCells
  • {"r":1,"c":0,"v":11}
  • {"r":2,"c":1,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [34] → [_, _] → [10, 9, 6]

Show answer

Answer: Row2[2]=15, Row2[1]=19

SubType
number-pyramid
Difficulty
starter
Levels
  • [34]
  • [19,15]
  • [10,9,6]
Base
  • 10
  • 9
  • 6
TopValue
34
HiddenCells
  • {"r":1,"c":1,"v":15}
  • {"r":1,"c":0,"v":19}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [10, _] → [_, 2, 9]

Show answer

Answer: Row2[2]=11, Row3[1]=8

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [10,11]
  • [8,2,9]
Base
  • 8
  • 2
  • 9
TopValue
21
HiddenCells
  • {"r":1,"c":1,"v":11}
  • {"r":2,"c":0,"v":8}