| Clue | Source | Date |
|---|---|---|
| Doing addition, carrying about two initially | The Telegraph Toughie | 14 Jan 2016 |
| Adding (up) | Newsday | 22 May 2015 |
| Youngster can initially grasp one element of arithmetic? | ||
| Adding (up) | ||
| Doing simple addition | ||
| Some arithmetic | ||
| Adding up | ||
| Adding up figures. | ||
| Adding. |