| 29241 | Rate of Return | ZX81 16K | English |
| 29232 | Rechthoek | ZX81 2K | Dutch |
| 18038 | Reduccion | ZX-Spectrum 48K | Spanish |
| 8627 | Regresioa Analyza | ZX-Spectrum 48K | Bosnian |
| 16482 | Regresiones | ZX-Spectrum 48K | Spanish |
| 27643 | Regresja | ZX-Spectrum 48K | Polish |
| 19809 | Regression | ZX-Spectrum 48K | English |
| 42760 | Regression | ZX-Spectrum 16K | English |
| 39352 | Regressniver | ZX81 16K | English |
| 42932 | Resolução de Equações Algébricas | ZX-Spectrum 48K | Portuguese |
| 22027 | Roman Calc | ZX-Spectrum 48K | English |
| 22461 | Roman Converter | ZX-Spectrum 48K | English |
| 26091 | Roots | ZX-Spectrum 16K | English |
| 28645 | Roots Of Quadratic Equations | ZX81 2K | English |
| 42041 | Rotación | ZX-Spectrum 16K | Spanish |
| 24185 | Round Off | ZX-Spectrum 48K | English |
| 8716 | SP-Easel | ZX-Spectrum 48K | Spanish |
| 14747 | Sand Conversion | ZX-Spectrum 48K | English |
| 38420 | Satelity | ZX-Spectrum 48K | Czech |
| 20345 | Satellite Spotter | ZX-Spectrum 16K | English |