+ | 8 | 4 | –3 | –5 |
–2 | –2 + 8 = +16 | |||
6 | ||||
0 | ||||
–4 |
+ | 8 | 4 | –3 | –5 |
–2 | –2 + 8 = +6 | –2 + 4 = +2 | –2 – 3 = –5 | –2 – 5 = –7 |
6 | 6 + 8 = 14 | 6 + 4 = 10 | 6 – 3 = 3 | 6 – 5 = 1 |
0 | 0 + 8 = 8 | 0 + 4 = 4 | 0 – 3 = –3 | 0 – 5 = –5 |
–4 | –4 + 8 = 4 | –4 + 4 = 0 | –4 – 3 = –7 | –4 – 5 = –9 |