The expression $8 \times 10^{5}+4 \times 10^{3}+9 \times 10+5$ is equal to
(A) 804095
(B) 804905
(C) 804950
(D) 840095
(E) 840950
First, we write out the powers of 10 in full to obtain $8 \times 100000+4 \times 1000+9 \times 10+5$. Simplifying, we obtain $800000+4000+90+5$ or 804095 .

ANSWER: (A)