starter Set 69 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [13, 8] → [6, _, 1]

Show answer

Answer: Row3[2]=7, Row1[1]=21

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [13,8]
  • [6,7,1]
Base
  • 6
  • 7
  • 1
TopValue
21
HiddenCells
  • {"r":2,"c":1,"v":7}
  • {"r":0,"c":0,"v":21}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [24] → [15, _] → [10, _, 4]

Show answer

Answer: Row3[2]=5, Row2[2]=9

SubType
number-pyramid
Difficulty
starter
Levels
  • [24]
  • [15,9]
  • [10,5,4]
Base
  • 10
  • 5
  • 4
TopValue
24
HiddenCells
  • {"r":2,"c":1,"v":5}
  • {"r":1,"c":1,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [16, 15] → [9, _, 8]

Show answer

Answer: Row3[2]=7, Row1[1]=31

SubType
number-pyramid
Difficulty
starter
Levels
  • [31]
  • [16,15]
  • [9,7,8]
Base
  • 9
  • 7
  • 8
TopValue
31
HiddenCells
  • {"r":2,"c":1,"v":7}
  • {"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): [20] → [_, 10] → [3, _, 3]

Show answer

Answer: Row2[1]=10, Row3[2]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [10,10]
  • [3,7,3]
Base
  • 3
  • 7
  • 3
TopValue
20
HiddenCells
  • {"r":1,"c":0,"v":10}
  • {"r":2,"c":1,"v":7}