Est. 1999

Compounding one investment

  1. HP-10B keystrokes
  2. Annual compounding
  3. 1 1 P/YR

    Sets one period per year

  4. 2 6 N
  5. 3 12 I/YR
  6. 4 125000 +/- PV
  7. 5 FV = 246,727.84
  8. Monthly compounding
  9. 6 12 P/YR

    Sets twelve periods per year

  10. 7 6 N
  11. 8 12 I/YR
  12. 9 125000 +/- PV
  13. 10 FV = 255,887.41

P/YR tells the calculator how many payments there are in a year. Set it first: 12 for monthly, 1 for annual. It stays set until you change it. +/- changes the number to a negative. On the HP-10B every cash outlay is entered as a negative, which is why the answer comes back positive — it is money you receive.