For "Calculate"
* Pre-: To calculate beforehand. (e.g., "pre-calculate the cost")
* Re-: To calculate again. (e.g., "re-calculate the results")
* Mis-: To calculate incorrectly. (e.g., "mis-calculate the amount")
* Over-: To calculate excessively. (e.g., "over-calculate the budget")
* Under-: To calculate insufficiently. (e.g., "under-calculate the time needed")
For "Manage"
* Mis-: To manage incorrectly. (e.g., "mis-manage the project")
* Co-: To manage together with others. (e.g., "co-manage the team")
* Self-: To manage oneself. (e.g., "self-manage your time")
* Cross-: To manage across different areas or departments. (e.g., "cross-manage the marketing and sales teams")
* Pre-: To manage in advance. (e.g., "pre-manage the risks")
* Micro-: To manage in a very detailed or precise way. (e.g., "micro-manage the staff")
Other Prefixes:
* Auto-: Automatic or self-operating. (e.g., "auto-calculate", "auto-manage")
* Macro-: Large-scale. (e.g., "macro-manage" a large company)
* Multi-: Involving multiple things. (e.g., "multi-calculate" different factors)
The best prefix to use will depend on the specific context and meaning you want to convey.