| Value | Category | Cases | |
|---|---|---|---|
| 1 | Child adds numbers correctly | 1577 | 
                                    
                                    27%
                                 | 
| 2 | Child didnt add numbers correctly | 514 | 
                                    
                                    8.8%
                                 | 
| 3 | No attempt | 1334 | 
                                    
                                    22.8%
                                 | 
| Sysmiss | 2425 | 
                                    
                                    41.5%
                                 |