Three tenths plus four thousandths is equal to
(A) 4030
(B) 0.0403
(C) 0.304
(D) 0.34
(E) 30.004
Written numerically, three tenths plus four thousandths is $\frac{3}{10}+\frac{4}{1000}$ which is equal to $\frac{300}{1000}+\frac{4}{1000}=\frac{304}{1000}=0.304$.