1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [30, _, _] → [_, 11, _, _] → [9, 10, 1, 8, 1] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [18, 15, 19] → [_, 6, _, _] → [9, 3, _, _, 4] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [53, _] → [_, 21, 17] → [18, _, 7, _] → [8, 10, _, _, _] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [81] → [_, _] → [_, _, _] → [_, 6, 13, 11] → [_, 3, 3, 10, _] =