Casio fx85GTPLUS 40 plus digit accuracy

[ijabbott]

(05-14-2023 07:35 AM)EdS2 Wrote:  Ah - see that dot over the final digit? That shows you're in 'recurring decimal mode' - and indeed, 220/381 repeats over 42 digits.

Neat though!

Edit: you might be able to get to 47 digits, maybe 48, but probably not 50, with an appropriate calculation. See the manual.

I'm sure there is a nice challenge here to display the maximum possible number of digits!

fx-83GT PLUS fx-85GT PLUS User's Guide Wrote:Conditions for Displaying a Calculation Result as a Recurring Decimal
If a calculation result satisfies the following conditions, pressing S↔D will display it as a recurring decimal value.

• The total number of digits used in the mixed fraction (including integer, numerator, denominator, and separator symbol) must be no more than 10.
• The data size of value to be displayed as the recurring decimal must be no larger than 99 bytes. Each value and the decimal point require one byte, and each digit of the period requires one byte. The following, for example, would require of total of 8 bytes (4 bytes for the values, 1 byte for the decimal point, 3 bytes for the period): \(0.\dot{1}2\dot{3}\)