To solve this problem, we need to analyze the given patterns and determine the logic behind the numbers assigned to each shape.
Step 1: Analyze the first equation
The first equation is:
```
# = 9
```
Here, the symbol `#` represents a grid with 9 smaller squares. This suggests that the number assigned to the symbol corresponds to the total number of smaller squares in the grid.
Step 2: Analyze the second equation
The second equation is:
```
+ = 1
```
Here, the symbol `+` represents a plus sign. The plus sign consists of two intersecting lines, but it does not contain any enclosed squares. Therefore, the number assigned to it is
1, which might represent the number of intersections or a different rule we need to identify.
Step 3: Identify the pattern
From the first two equations, we can infer the following:
- The symbol `#` (a grid) is assigned the number of smaller squares it contains.
- The symbol `+` (a plus sign) is assigned the number of intersections it has.
Step 4: Apply the pattern to the third equation
The third equation is:
```
# = ?
```
This symbol `#` is the same as the one in the first equation, which is a grid. Since the grid contains 9 smaller squares, the number assigned to it should be
9.
Final Answer:
The number that will replace the question mark is:
```
\boxed{9}
```
Parent Tip: Review the logic above to help your child master the concept of riddle math.