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): [_] → [_, 16] → [9, 8, 8]

Show answer

Answer: Row1[1]=33, Row2[1]=17

SubType
number-pyramid
Difficulty
starter
Levels
  • [33]
  • [17,16]
  • [9,8,8]
Base
  • 9
  • 8
  • 8
TopValue
33
HiddenCells
  • {"r":0,"c":0,"v":33}
  • {"r":1,"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): [18] → [9, _] → [4, _, 4]

Show answer

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

SubType
number-pyramid
Difficulty
starter
Levels
  • [18]
  • [9,9]
  • [4,5,4]
Base
  • 4
  • 5
  • 4
TopValue
18
HiddenCells
  • {"r":2,"c":1,"v":5}
  • {"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): [28] → [_, 12] → [_, 10, 2]

Show answer

Answer: Row3[1]=6, Row2[1]=16

SubType
number-pyramid
Difficulty
starter
Levels
  • [28]
  • [16,12]
  • [6,10,2]
Base
  • 6
  • 10
  • 2
TopValue
28
HiddenCells
  • {"r":2,"c":0,"v":6}
  • {"r":1,"c":0,"v":16}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [23] → [_, _] → [3, 8, 4]

Show answer

Answer: Row2[2]=12, Row2[1]=11

SubType
number-pyramid
Difficulty
starter
Levels
  • [23]
  • [11,12]
  • [3,8,4]
Base
  • 3
  • 8
  • 4
TopValue
23
HiddenCells
  • {"r":1,"c":1,"v":12}
  • {"r":1,"c":0,"v":11}