starter Set 83 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [13] → [_, 3] → [9, _, 2]

Show answer

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

SubType
number-pyramid
Difficulty
starter
Levels
  • [13]
  • [10,3]
  • [9,1,2]
Base
  • 9
  • 1
  • 2
TopValue
13
HiddenCells
  • {"r":2,"c":1,"v":1}
  • {"r":1,"c":0,"v":10}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [20] → [13, 7] → [_, _, 4]

Show answer

Answer: Row3[1]=10, Row3[2]=3

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [13,7]
  • [10,3,4]
Base
  • 10
  • 3
  • 4
TopValue
20
HiddenCells
  • {"r":2,"c":0,"v":10}
  • {"r":2,"c":1,"v":3}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [9] → [5, 4] → [_, _, 3]

Show answer

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

SubType
number-pyramid
Difficulty
starter
Levels
  • [9]
  • [5,4]
  • [4,1,3]
Base
  • 4
  • 1
  • 3
TopValue
9
HiddenCells
  • {"r":2,"c":0,"v":4}
  • {"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): [27] → [13, _] → [4, _, 5]

Show answer

Answer: Row2[2]=14, Row3[2]=9

SubType
number-pyramid
Difficulty
starter
Levels
  • [27]
  • [13,14]
  • [4,9,5]
Base
  • 4
  • 9
  • 5
TopValue
27
HiddenCells
  • {"r":1,"c":1,"v":14}
  • {"r":2,"c":1,"v":9}