How much is 9-5 should be excepted

The program doesnt seem to accept the - sign

"How many" and "how much" both should be accepted, they are both a more accurate translation of "Berapa" than "what is".

"What's the minus of nine and five", if we quote Idiocracy

"What is nine take five?" should also be accepted because "minus" and "take" are interchangeable in Mathematics.

Take away is the same as minus... maths teacher who knows what she is talking about !!! Check all the possible terminology

Is that "What is" common used in English instead of "How much" ? It looks weird for me.

yes very commonly used , but my answer was how many is nine minus five - also used in English but it was not allowed! :-) -- I am English......