starter Set 79 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] → [8, 3, _]

Show answer

Answer: Row2[1]=11, Row3[3]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [11,10]
  • [8,3,7]
Base
  • 8
  • 3
  • 7
TopValue
21
HiddenCells
  • {"r":1,"c":0,"v":11}
  • {"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): [_] → [9, 2] → [8, _, 1]

Show answer

Answer: Row1[1]=11, Row3[2]=1

SubType
number-pyramid
Difficulty
starter
Levels
  • [11]
  • [9,2]
  • [8,1,1]
Base
  • 8
  • 1
  • 1
TopValue
11
HiddenCells
  • {"r":0,"c":0,"v":11}
  • {"r":2,"c":1,"v":1}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [14] → [7, _] → [_, 5, 2]

Show answer

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

SubType
number-pyramid
Difficulty
starter
Levels
  • [14]
  • [7,7]
  • [2,5,2]
Base
  • 2
  • 5
  • 2
TopValue
14
HiddenCells
  • {"r":1,"c":1,"v":7}
  • {"r":2,"c":0,"v":2}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [23] → [_, 11] → [5, _, 4]

Show answer

Answer: Row2[1]=12, Row3[2]=7

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