1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [39] → [17, _] → [10, 7, _] → [_, _, 6, 9] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 21] → [9, 7, 14] → [_, 1, _, 8] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [42] → [_, _] → [_, 8, 15] → [9, 2, _, 9] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [43] → [19, 24] → [_, 12, _] → [_, 3, _, 3] =