YOU SAID:

i should do math right now

INTO JAPANESE

私は今数学を行う必要があります

BACK INTO ENGLISH

I have to do math now

INTO JAPANESE

私は今数学をしなければならない

BACK INTO ENGLISH

I have to do math now.

INTO JAPANESE

私は今数学をしなければならない。

BACK INTO ENGLISH

I have to do math now.