A half and half certainly make a whole like in puzzle #23, but here we have HALF + HALF = CREAM.
Solutions are below the image.
SPOILER SOLUTIONS!
| HALF_first | HALF_second | CREAM_third |
|---|---|---|
| 5369 | 5369 | 10738 |
| 5423 | 5423 | 10846 |
| 5473 | 5473 | 10946 |
| 6527 | 6527 | 13054 |
| 6529 | 6529 | 13058 |
| 6892 | 6892 | 13784 |
| 6945 | 6945 | 13890 |
| 7634 | 7634 | 15268 |
| 7682 | 7682 | 15364 |
| 7946 | 7946 | 15892 |
| 9365 | 9365 | 18730 |