1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [91] → [_, 54] → [_, 23, 31] → [_, _, _, 16] → [5, 1, _, _, _] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [47, _] → [29, _, _] → [18, _, 7, 11] → [10, _, _, 4, _] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 29] → [21, 16, _] → [_, 9, _, _] → [_, 7, _, 5, 1] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [11, _, 14] → [4, 7, 8, 6] → [_, _, _, _, 4] =