D00-F02 arithmetic lab

Cash-Flow Timelines and Net Present Value

Move one cash flow or the rate and see why timing changes the sum. This is a tiny synthetic example. It is not a market calculator.

1. Choose a teaching case

Canonical

Evidence trace

2. Choose the numbers

Time-0 cash (SAR) Period-1 cash (SAR) Period-2 cash (SAR) Discount rate (%)

Stage 1 · name the input

Ready

Start with the numbers and press Step. The lab will reveal one small idea at a time.

Remember: a calculation can be correct and still be the wrong calculation for a real decision. Keep the unit, time period, and boundary with the answer.