1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [30, _] → [_, 13, 20] → [_, 5, _, 12] → [_, _, 1, 7, _] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [117] → [_, _] → [21, 31, _] → [_, _, _, 16] → [4, _, 9, _, 7] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [68, _] → [_, 33, _] → [18, _, _, 12] → [_, 10, _, 9, 3] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [43, _] → [18, 25, _] → [9, _, _, 17] → [_, 1, _, 8, _] =