starter Set 56 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [10, _] → [2, _, 3]

Show answer

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

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [10,11]
  • [2,8,3]
Base
  • 2
  • 8
  • 3
TopValue
21
HiddenCells
  • {"r":2,"c":1,"v":8}
  • {"r":1,"c":1,"v":11}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [9, 13] → [5, _, 9]

Show answer

Answer: Row3[2]=4, Row1[1]=22

SubType
number-pyramid
Difficulty
starter
Levels
  • [22]
  • [9,13]
  • [5,4,9]
Base
  • 5
  • 4
  • 9
TopValue
22
HiddenCells
  • {"r":2,"c":1,"v":4}
  • {"r":0,"c":0,"v":22}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [11] → [7, _] → [6, 1, _]

Show answer

Answer: Row3[3]=3, Row2[2]=4

SubType
number-pyramid
Difficulty
starter
Levels
  • [11]
  • [7,4]
  • [6,1,3]
Base
  • 6
  • 1
  • 3
TopValue
11
HiddenCells
  • {"r":2,"c":2,"v":3}
  • {"r":1,"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): [30] → [_, 13] → [_, 10, 3]

Show answer

Answer: Row2[1]=17, Row3[1]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [30]
  • [17,13]
  • [7,10,3]
Base
  • 7
  • 10
  • 3
TopValue
30
HiddenCells
  • {"r":1,"c":0,"v":17}
  • {"r":2,"c":0,"v":7}