starter Set 90 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [6, 11] → [5, _, 10]

Show answer

Answer: Row3[2]=1, Row1[1]=17

SubType
number-pyramid
Difficulty
starter
Levels
  • [17]
  • [6,11]
  • [5,1,10]
Base
  • 5
  • 1
  • 10
TopValue
17
HiddenCells
  • {"r":2,"c":1,"v":1}
  • {"r":0,"c":0,"v":17}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [5, _] → [4, 1, 8]

Show answer

Answer: Row1[1]=14, Row2[2]=9

SubType
number-pyramid
Difficulty
starter
Levels
  • [14]
  • [5,9]
  • [4,1,8]
Base
  • 4
  • 1
  • 8
TopValue
14
HiddenCells
  • {"r":0,"c":0,"v":14}
  • {"r":1,"c":1,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [19] → [_, 10] → [4, _, 5]

Show answer

Answer: Row2[1]=9, Row3[2]=5

SubType
number-pyramid
Difficulty
starter
Levels
  • [19]
  • [9,10]
  • [4,5,5]
Base
  • 4
  • 5
  • 5
TopValue
19
HiddenCells
  • {"r":1,"c":0,"v":9}
  • {"r":2,"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): [17] → [_, _] → [9, 1, 6]

Show answer

Answer: Row2[2]=7, Row2[1]=10

SubType
number-pyramid
Difficulty
starter
Levels
  • [17]
  • [10,7]
  • [9,1,6]
Base
  • 9
  • 1
  • 6
TopValue
17
HiddenCells
  • {"r":1,"c":1,"v":7}
  • {"r":1,"c":0,"v":10}