starter Set 69 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [23] → [10, _] → [_, 9, 4]

Show answer

Answer: Row3[1]=1, Row2[2]=13

SubType
number-pyramid
Difficulty
starter
Levels
  • [23]
  • [10,13]
  • [1,9,4]
Base
  • 1
  • 9
  • 4
TopValue
23
HiddenCells
  • {"r":2,"c":0,"v":1}
  • {"r":1,"c":1,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [7] → [2, _] → [1, _, 4]

Show answer

Answer: Row3[2]=1, Row2[2]=5

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

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [30] → [12, _] → [2, _, 8]

Show answer

Answer: Row3[2]=10, Row2[2]=18

SubType
number-pyramid
Difficulty
starter
Levels
  • [30]
  • [12,18]
  • [2,10,8]
Base
  • 2
  • 10
  • 8
TopValue
30
HiddenCells
  • {"r":2,"c":1,"v":10}
  • {"r":1,"c":1,"v":18}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [19] → [13, _] → [_, 4, 2]

Show answer

Answer: Row2[2]=6, Row3[1]=9

SubType
number-pyramid
Difficulty
starter
Levels
  • [19]
  • [13,6]
  • [9,4,2]
Base
  • 9
  • 4
  • 2
TopValue
19
HiddenCells
  • {"r":1,"c":1,"v":6}
  • {"r":2,"c":0,"v":9}