https://r2.erweima.ai/mathbot/image/1727103144065ou1l9wnb.jpg

The puzzle asks to find the appropriate number that should replace the question mark. 

The three grids contain numbers arranged in a pattern that we need to decipher. Let’s analyze them one by one:

1. First grid:  
   \[
   \begin{matrix}
   9 & 2 \\
   6 & 3
   \end{matrix}
   \]
   If we sum the rows:  
   - First row: \( 9 + 2 = 11 \)  
   - Second row: \( 6 + 3 = 9 \)

2. Second grid:  
   \[
   \begin{matrix}
   10 & 3 \\
   14 & 5
   \end{matrix}
   \]
   If we sum the rows:  
   - First row: \( 10 + 3 = 13 \)  
   - Second row: \( 14 + 5 = 19 \)

3. Third grid:  
   \[
   \begin{matrix}
   10 & 2 \\
   8 & ?
   \end{matrix}
   \]
   To follow the same rule of summing the rows:  
   - First row: \( 10 + 2 = 12 \)  
   We expect the second row to sum up to 12 as well, so:  
   - \( 8 + ? = 12 \), which means \( ? = 4 \)

Thus, the missing number is **4**.

Would you like more details on the pattern, or have any questions?

Here are 5 related questions for practice:
1. Can you identify any other types of number patterns?
2. If you replaced the 10 in the third grid with another number, how would it change the result?
3. What if we were asked for the sum of all elements in the three grids?
4. Could this pattern be extended to larger grids?
5. What other arithmetic operations could be applied to the grids?

**Tip:** Always look for consistent patterns such as addition, subtraction, multiplication, or symmetry in number puzzles.

Solve the grid puzzle by finding the missing number. This problem involves adding numbers in rows and columns and following an arithmetic pattern. Suitable for students in Grades 5-7.

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