starter Set 39 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [_, 6] → [_, 5, 1]

Show answer

Answer: Row2[1]=15, Row3[1]=10

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [15,6]
  • [10,5,1]
Base
  • 10
  • 5
  • 1
TopValue
21
HiddenCells
  • {"r":1,"c":0,"v":15}
  • {"r":2,"c":0,"v":10}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [7, 11] → [5, _, 9]

Show answer

Answer: Row3[2]=2, Row1[1]=18

SubType
number-pyramid
Difficulty
starter
Levels
  • [18]
  • [7,11]
  • [5,2,9]
Base
  • 5
  • 2
  • 9
TopValue
18
HiddenCells
  • {"r":2,"c":1,"v":2}
  • {"r":0,"c":0,"v":18}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [20, _] → [10, 10, 3]

Show answer

Answer: Row1[1]=33, Row2[2]=13

SubType
number-pyramid
Difficulty
starter
Levels
  • [33]
  • [20,13]
  • [10,10,3]
Base
  • 10
  • 10
  • 3
TopValue
33
HiddenCells
  • {"r":0,"c":0,"v":33}
  • {"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): [26] → [_, 15] → [5, 6, _]

Show answer

Answer: Row2[1]=11, Row3[3]=9

SubType
number-pyramid
Difficulty
starter
Levels
  • [26]
  • [11,15]
  • [5,6,9]
Base
  • 5
  • 6
  • 9
TopValue
26
HiddenCells
  • {"r":1,"c":0,"v":11}
  • {"r":2,"c":2,"v":9}