starter Set 73 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [12, 9] → [5, 7, _]

Show answer

Answer: Row1[1]=21, Row3[3]=2

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [12,9]
  • [5,7,2]
Base
  • 5
  • 7
  • 2
TopValue
21
HiddenCells
  • {"r":0,"c":0,"v":21}
  • {"r":2,"c":2,"v":2}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [25] → [10, 15] → [_, 8, _]

Show answer

Answer: Row3[1]=2, Row3[3]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [25]
  • [10,15]
  • [2,8,7]
Base
  • 2
  • 8
  • 7
TopValue
25
HiddenCells
  • {"r":2,"c":0,"v":2}
  • {"r":2,"c":2,"v":7}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [38] → [_, 18] → [10, _, 8]

Show answer

Answer: Row2[1]=20, Row3[2]=10

SubType
number-pyramid
Difficulty
starter
Levels
  • [38]
  • [20,18]
  • [10,10,8]
Base
  • 10
  • 10
  • 8
TopValue
38
HiddenCells
  • {"r":1,"c":0,"v":20}
  • {"r":2,"c":1,"v":10}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [9, _] → [4, 5, 6]

Show answer

Answer: Row2[2]=11, Row1[1]=20

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [9,11]
  • [4,5,6]
Base
  • 4
  • 5
  • 6
TopValue
20
HiddenCells
  • {"r":1,"c":1,"v":11}
  • {"r":0,"c":0,"v":20}