Modern calculators can switch modes between decimal and fractions. It’s pretty irrelevant.
Also, someone may do the problem themselves using any number of means that involve decimals. Or maybe they simply prefer to write in decimal. Either way, the program is simply wrong.
I heavily doubt this is the reason. It would fail so many honest users while catching a few cheaters. And the cheaters could easily avoid getting caught by using the correct mode on a decent calculator.
Calculators can make decimal easy and fractions hard when doing it yourself fractions are much easier it’s an anti-cheat of sorts
Modern calculators can switch modes between decimal and fractions. It’s pretty irrelevant.
Also, someone may do the problem themselves using any number of means that involve decimals. Or maybe they simply prefer to write in decimal. Either way, the program is simply wrong.
I heavily doubt this is the reason. It would fail so many honest users while catching a few cheaters. And the cheaters could easily avoid getting caught by using the correct mode on a decent calculator.