1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [38] → [13, 25] → [_, _, _] → [_, 1, 10, 4] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [52] → [26, _] → [_, 13, 13] → [_, 6, _, 6] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [15, 22] → [5, _, _] → [4, 1, 9, _] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [39] → [21, 18] → [11, 10, _] → [_, 3, _, _] =