YOU SAID:

I think i've done my maths quite wrong

INTO JAPANESE

私は数学をかなり間違ってやったと思う

BACK INTO ENGLISH

I think that I made quite wrong mathematics

INTO JAPANESE

私はかなり間違った数学を作ったと思う

BACK INTO ENGLISH

I think that I made fairly wrong mathematics

INTO JAPANESE

私はかなり間違った数学を作ったと思う

BACK INTO ENGLISH

I think that I made fairly wrong mathematics