starter Set 15 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [13] → [_, _] → [1, 3, 6]

Show answer

Answer: Row2[2]=9, Row2[1]=4

SubType
number-pyramid
Difficulty
starter
Levels
  • [13]
  • [4,9]
  • [1,3,6]
Base
  • 1
  • 3
  • 6
TopValue
13
HiddenCells
  • {"r":1,"c":1,"v":9}
  • {"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): [11] → [_, 5] → [2, 4, _]

Show answer

Answer: Row3[3]=1, Row2[1]=6

SubType
number-pyramid
Difficulty
starter
Levels
  • [11]
  • [6,5]
  • [2,4,1]
Base
  • 2
  • 4
  • 1
TopValue
11
HiddenCells
  • {"r":2,"c":2,"v":1}
  • {"r":1,"c":0,"v":6}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [14, 17] → [5, 9, _]

Show answer

Answer: Row3[3]=8, Row1[1]=31

SubType
number-pyramid
Difficulty
starter
Levels
  • [31]
  • [14,17]
  • [5,9,8]
Base
  • 5
  • 9
  • 8
TopValue
31
HiddenCells
  • {"r":2,"c":2,"v":8}
  • {"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): [23] → [_, 11] → [_, 7, 4]

Show answer

Answer: Row3[1]=5, Row2[1]=12

SubType
number-pyramid
Difficulty
starter
Levels
  • [23]
  • [12,11]
  • [5,7,4]
Base
  • 5
  • 7
  • 4
TopValue
23
HiddenCells
  • {"r":2,"c":0,"v":5}
  • {"r":1,"c":0,"v":12}