Como converter números decimais ou fracionados em inteiros no HP30b? - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: General Forum (/forum-4.html) +--- Thread: Como converter números decimais ou fracionados em inteiros no HP30b? (/thread-16100.html) Como converter números decimais ou fracionados em inteiros no HP30b? - FabioBrasil - 12-31-2020 07:43 PM On the HP30b, is it possible to enter non-integer P / YR values and thus not get an ERROR message? At HP, is there any way to convert decimal or fractional numbers to whole numbers (C / YR and P / YR)? Currently, I find interest rates equivalent, either by a program on the HP30b, or by the traditional method. Is there a possibility to do this without a program? Example: I have the rate 1.8% bimonthly (2 months) and I want the equivalent effective rate for quarter (3 months). With the program I do: 1.8 I / YR 3 INPUT 2 ÷ N SHIFT PRGM = Or manually: 1.8 I / YR PV = 1 N = 1 FV =? (= -1,0002) 2 INPUT 3 ÷ N I / YR =? Answer: 2.7% Sorry for the question and errors in English (I use Google Translate), but I'm starting on the HP30b. Still thanks and happy holidays! RE: Como converter números decimais ou fracionados em inteiros no HP30b? - rprosperi - 12-31-2020 10:34 PM Do you have the Owner's Manual for your 30b? There is a copy you can download here: https://literature.hpcalc.org/official/hp20b30b-ug-en.pdf RE: Como converter números decimais ou fracionados em inteiros no HP30b? - Albert Chan - 01-01-2021 12:24 AM 1.8% bi-monthly rate to quarterly (3-months) effective rate: 1.018 ^ (3/2) = 1.027121138 ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ // effective quarterly rate = 2.7121138% RE: Como converter números decimais ou fracionados em inteiros no HP30b? - ijabbott - 01-01-2021 01:58 PM One way to do it manually is to pretend that 1.8% is an annual rate compounded yearly for 6 years, then determine the interest rate that would produce the same future value in 4 years: Code: ```1 SHIFT P/YR 6 N 1.8 I/YR  1 PV 0 PMT FV            [FV = -1.11297822601] 4 N I/YR          [I/YR = 2.71211379381]``` RE: Como converter números decimais ou fracionados em inteiros no HP30b? - Albert Chan - 01-01-2021 11:39 PM (01-01-2021 01:58 PM)ijabbott Wrote:  One way to do it manually is to pretend that 1.8% is an annual rate compounded yearly for 6 years, then determine the interest rate that would produce the same future value in 4 years No need to pretend: (I/Yr) ÷ (P/Yr) = I/P By setting P/Yr = 1, whatever entered into I/Yr is I/P (interest rate per period). So, the code can also interpret as first getting APY (FV = -1.11297822601 → APY ≈ 11.2978%), then convert to quarterly rate (I/P ≈ 2.7121%, P = 3 months) (12-31-2020 07:43 PM)FabioBrasil Wrote:  On the HP30b, is it possible to enter non-integer P / YR values and thus not get an ERROR message? This also answered OP question. Example: P/Yr = 3.14, I/Yr = 6% is equivalent to P/Yr = 1, I/P = I/Yr = 6%/3.14 RE: Como converter números decimais ou fracionados em inteiros no HP30b? - FabioBrasil - 01-08-2021 09:00 PM Thank you all