Answer
(a) $319,000$
(b) $272,100,000$
(c) $0.00000002670 $
(d) $0.000000009999$
Work Step by Step
(a) $3.19 \times 10^5=319,000$. Move the decimal point $5$ spaces to the right.
(b) $2.721 \times 10^8=272,100,000$. Move the decimal point $8$ spaces to the right.
(c) $2.670 \times 10^{-8}=0.00000002670$. Move the decimal point $8$ spaces to the left.
(d) $9.999 \times 10^{-9}=0.000000009999$. Move the decimal point $9$ spaces to the left.
