464. Mathematics, etc. + singular verb
(X) Mathematics are not easy to learn.
(O) Mathematics is not easy to learn.
Note: The names of sciences and subjects ending in "-ics"
(like mathematics, physics, politics, gymnastics) generally take a singular verb.
465. Money + singular verb
(X) All her money are kept in the bank.
(O) All her money is kept in the bank.
Note: "Money" is a singular noun and always takes a singular verb and pronoun.
466. News + singular verb
(X) I'm glad that the news are good.
(O) I'm glad that the news is good.
Note: "News", though plural in form, always takes a singular verb.
If only one thing is meant we say "a piece of news or an item of news".
This is a good piece of news.