| Instruction | Operation | Variable | Description |
|---|---|---|---|
| 30ijk | FXi | Xj+Xk | Sum of (Xj) plus (Xk) to Xi |
| 31ijk | FXi | Xj-Xk | Difference of (Xj) minus (Xk) to Xi |
| 32ijk | DXi | Xj+Xk | Double-precision sum of (Xj) plus (Xk) to Xi |
| 33ijk | DXi | Xj-Xk | Double-precision difference of (Xj) minus (Xk) to Xi |
| 34ijk | RXi | Xj+Xk | Rounded sum of (Xj) plus (Xk) to Xi |
| 35ijk | RXi | Xj-Xk | Rounded difference of (Xj) minus (Xk) to Xi |
| 36ijk | IXi | Xj+Xk | Integer sum of (Xj) plus (Xk) to Xi |
| 37ijk | IXi | Xj-Xk | Integer difference of (Xj) minus (Xk) to Xi |