starter Set 53 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 9] → [9, 2, 7]

Show answer

Answer: Row2[1]=11, Row1[1]=20

SubType
number-pyramid
Difficulty
starter
Levels
  • [20]
  • [11,9]
  • [9,2,7]
Base
  • 9
  • 2
  • 7
TopValue
20
HiddenCells
  • {"r":1,"c":0,"v":11}
  • {"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): [_] → [_, 12] → [7, 8, 4]

Show answer

Answer: Row1[1]=27, Row2[1]=15

SubType
number-pyramid
Difficulty
starter
Levels
  • [27]
  • [15,12]
  • [7,8,4]
Base
  • 7
  • 8
  • 4
TopValue
27
HiddenCells
  • {"r":0,"c":0,"v":27}
  • {"r":1,"c":0,"v":15}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [36] → [_, _] → [7, 10, 9]

Show answer

Answer: Row2[2]=19, Row2[1]=17

SubType
number-pyramid
Difficulty
starter
Levels
  • [36]
  • [17,19]
  • [7,10,9]
Base
  • 7
  • 10
  • 9
TopValue
36
HiddenCells
  • {"r":1,"c":1,"v":19}
  • {"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): [28] → [_, 13] → [5, _, 3]

Show answer

Answer: Row2[1]=15, Row3[2]=10

SubType
number-pyramid
Difficulty
starter
Levels
  • [28]
  • [15,13]
  • [5,10,3]
Base
  • 5
  • 10
  • 3
TopValue
28
HiddenCells
  • {"r":1,"c":0,"v":15}
  • {"r":2,"c":1,"v":10}