1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [81] → [44, 37] → [_, _, 15] → [_, _, _, 5] → [_, 5, 7, _, _] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [48, _] → [20, _, 27] → [_, 12, 16, _] → [_, _, 7, _, 2] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [15, _, _] → [6, _, 9, 6] → [3, _, 6, 3, _] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [35, _] → [13, _, 23] → [_, 9, _, _] → [3, _, 8, _, 5] =