1. The problem is to fill the pyramid blocks above the bottom layer with numbers such that each block is the sum of the two blocks directly below it. 2. The bottom layer numbers are 22, 11, and 42 from left to right. 3. Let the two blocks above the bottom layer be $x$ (left) and $y$ (right), and the top block be $z$. 4. According to the rule, each block above is the sum of the two blocks below it: $$x = 22 + 11 = 33$$ $$y = 11 + 42 = 53$$ $$z = x + y = 33 + 53 = 86$$ 5. So the filled pyramid from bottom to top is: Bottom: 22, 11, 42 Middle: 33, 53 Top: 86 This completes the pyramid with sums in each block.