starter Set 50 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [10, _] → [6, 4, 6]

Show answer

Answer: Row2[2]=10, Row1[1]=20

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [10,10]
  • [6,4,6]
Base
  • 6
  • 4
  • 6
TopValue
20
HiddenCells
  • {"r":1,"c":1,"v":10}
  • {"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): [_] → [11, 16] → [4, _, 9]

Show answer

Answer: Row3[2]=7, Row1[1]=27

SubType
number-pyramid
Difficulty
starter
Levels
  • [27]
  • [11,16]
  • [4,7,9]
Base
  • 4
  • 7
  • 9
TopValue
27
HiddenCells
  • {"r":2,"c":1,"v":7}
  • {"r":0,"c":0,"v":27}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [12] → [8, 4] → [5, _, _]

Show answer

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

SubType
number-pyramid
Difficulty
starter
Levels
  • [12]
  • [8,4]
  • [5,3,1]
Base
  • 5
  • 3
  • 1
TopValue
12
HiddenCells
  • {"r":2,"c":2,"v":1}
  • {"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): [19] → [9, 10] → [6, _, _]

Show answer

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

SubType
number-pyramid
Difficulty
starter
Levels
  • [19]
  • [9,10]
  • [6,3,7]
Base
  • 6
  • 3
  • 7
TopValue
19
HiddenCells
  • {"r":2,"c":1,"v":3}
  • {"r":2,"c":2,"v":7}