1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [97] → [_, 52] → [21, _, _] → [9, _, 12, 16] → [_, _, _, _, 9] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 41] → [_, _, 19] → [_, 12, _, 9] → [4, 10, 2, _, _] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [123] → [67, _] → [36, 31, _] → [18, _, _, 12] → [_, 8, _, _, _] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [66, _] → [32, _, _] → [14, _, 16, _] → [4, 10, _, 8, _] =