1
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 74] → [39, _, _] → [_, _, _, 18] → [9, 10, _, 8, 10] =
2
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [71] → [34, 37] → [18, 16, _] → [_, _, _, _] → [_, 2, _, 4, _] =
3
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [76, 70] → [37, _, 31] → [_, _, 19, 12] → [_, _, _, 9, _] =
4
Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [22, 28, 31] → [_, 13, 15, _] → [_, 4, _, _, 10] =