starter Set 100 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [_, _] → [5, 3, 10]

Show answer

Answer: Row2[1]=8, Row2[2]=13

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [8,13]
  • [5,3,10]
Base
  • 5
  • 3
  • 10
TopValue
21
HiddenCells
  • {"r":1,"c":0,"v":8}
  • {"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): [29] → [15, _] → [10, _, 9]

Show answer

Answer: Row3[2]=5, Row2[2]=14

SubType
number-pyramid
Difficulty
starter
Levels
  • [29]
  • [15,14]
  • [10,5,9]
Base
  • 10
  • 5
  • 9
TopValue
29
HiddenCells
  • {"r":2,"c":1,"v":5}
  • {"r":1,"c":1,"v":14}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 17] → [3, 10, 7]

Show answer

Answer: Row1[1]=30, Row2[1]=13

SubType
number-pyramid
Difficulty
starter
Levels
  • [30]
  • [13,17]
  • [3,10,7]
Base
  • 3
  • 10
  • 7
TopValue
30
HiddenCells
  • {"r":0,"c":0,"v":30}
  • {"r":1,"c":0,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [14] → [4, _] → [_, 2, 8]

Show answer

Answer: Row2[2]=10, Row3[1]=2

SubType
number-pyramid
Difficulty
starter
Levels
  • [14]
  • [4,10]
  • [2,2,8]
Base
  • 2
  • 2
  • 8
TopValue
14
HiddenCells
  • {"r":1,"c":1,"v":10}
  • {"r":2,"c":0,"v":2}