starter Set 21 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [17] → [12, 5] → [_, 3, _]

Show answer

Answer: Row3[3]=2, Row3[1]=9

SubType
number-pyramid
Difficulty
starter
Levels
  • [17]
  • [12,5]
  • [9,3,2]
Base
  • 9
  • 3
  • 2
TopValue
17
HiddenCells
  • {"r":2,"c":2,"v":2}
  • {"r":2,"c":0,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [21] → [_, 11] → [_, 7, 4]

Show answer

Answer: Row3[1]=3, Row2[1]=10

SubType
number-pyramid
Difficulty
starter
Levels
  • [21]
  • [10,11]
  • [3,7,4]
Base
  • 3
  • 7
  • 4
TopValue
21
HiddenCells
  • {"r":2,"c":0,"v":3}
  • {"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): [28] → [14, _] → [7, _, 7]

Show answer

Answer: Row3[2]=7, Row2[2]=14

SubType
number-pyramid
Difficulty
starter
Levels
  • [28]
  • [14,14]
  • [7,7,7]
Base
  • 7
  • 7
  • 7
TopValue
28
HiddenCells
  • {"r":2,"c":1,"v":7}
  • {"r":1,"c":1,"v":14}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [36] → [19, _] → [_, 9, 8]

Show answer

Answer: Row2[2]=17, Row3[1]=10

SubType
number-pyramid
Difficulty
starter
Levels
  • [36]
  • [19,17]
  • [10,9,8]
Base
  • 10
  • 9
  • 8
TopValue
36
HiddenCells
  • {"r":1,"c":1,"v":17}
  • {"r":2,"c":0,"v":10}