1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [27, 27, _] → [_, 16, 11, _] → [2, 9, _, _, 10] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [42, 38] → [_, _, _] → [13, 11, _, _] → [6, 7, _, _, 10] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 45] → [_, _, 20] → [10, 15, 10, _] → [1, _, 6, _, _] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [52, _] → [_, 25, 21] → [11, _, 9, _] → [1, _, _, _, 9] =