Fill in the missing numbers.

Let's fill in the missing numbers based on the image. The top number is the sum of the two numbers below it.

Here are the solutions:

1. 5 = 2 + ?

   5 - 2 = 3

   So, the missing number is 3.

2. 6 = 1 + ?

   6 - 1 = 5

   So, the missing number is 5.

3. 8 = 3 + ?

   8 - 3 = 5

   So, the missing number is 5.

4. ? = 2 + 7

   2 + 7 = 9

   So, the missing number is 9.

5. ? = 4 + 1

   4 + 1 = 5

   So, the missing number is 5.

6. ? = 3 + 5

   3 + 5 = 8

   So, the missing number is 8.

7. 9 = 1 + ?

   9 - 1 = 8

   So, the missing number is 8.

8. 5 = 1 + ?

   5 - 1 = 4

   So, the missing number is 4.

9. 7 = 3 + ?

   7 - 3 = 4

   So, the missing number is 4.

10. ? = 3 + 6

    3 + 6 = 9

    So, the missing number is 9.

11. ? = 1 + 5

    1 + 5 = 6

    So, the missing number is 6.

12. ? = 4 + 4

    4 + 4 = 8

    So, the missing number is 8.

Here are all the missing numbers:

1. 3
2. 5
3. 5
4. 9
5. 5
6. 8
7. 8
8. 4
9. 4
10. 9
11. 6
12. 8