starter Set 80 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [10, 10] → [1, _, 1]

Show answer

Answer: Row3[2]=9, Row1[1]=20

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [10,10]
  • [1,9,1]
Base
  • 1
  • 9
  • 1
TopValue
20
HiddenCells
  • {"r":2,"c":1,"v":9}
  • {"r":0,"c":0,"v":20}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [15, 7] → [_, 5, 2]

Show answer

Answer: Row3[1]=10, Row1[1]=22

SubType
number-pyramid
Difficulty
starter
Levels
  • [22]
  • [15,7]
  • [10,5,2]
Base
  • 10
  • 5
  • 2
TopValue
22
HiddenCells
  • {"r":2,"c":0,"v":10}
  • {"r":0,"c":0,"v":22}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [3, 6] → [1, _, 4]

Show answer

Answer: Row1[1]=9, Row3[2]=2

SubType
number-pyramid
Difficulty
starter
Levels
  • [9]
  • [3,6]
  • [1,2,4]
Base
  • 1
  • 2
  • 4
TopValue
9
HiddenCells
  • {"r":0,"c":0,"v":9}
  • {"r":2,"c":1,"v":2}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [29] → [16, _] → [9, _, 6]

Show answer

Answer: Row2[2]=13, Row3[2]=7

SubType
number-pyramid
Difficulty
starter
Levels
  • [29]
  • [16,13]
  • [9,7,6]
Base
  • 9
  • 7
  • 6
TopValue
29
HiddenCells
  • {"r":1,"c":1,"v":13}
  • {"r":2,"c":1,"v":7}