1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [147] → [_, 71] → [_, _, _] → [20, _, 18, 16] → [10, 10, _, _, _] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [26, 28, _] → [11, 15, 13, _] → [4, _, 8, _, _] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [45, _] → [_, _, 31] → [_, _, _, 16] → [8, 4, 5, _, 6] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [37] → [19, 18] → [13, _, 12] → [_, 3, _, _] → [8, _, _, _, _] =