Question

1. the mass of a textbook is approximately 0.00165 metric ton. how is this number written in scientific notation?

f ( 165 \times 10^{-5} )
g ( 1.65 \times 10^{-3} )
h ( 16.5 \times 10^{-4} )
j ( 0.165 \times 10^{-2} )

Explanation:

Step1: Recall scientific notation rule

Scientific notation is $a \times 10^n$, where $1 \leq a < 10$, $n$ is integer.

Step2: Adjust 0.00165 to meet $a$ requirement

Move decimal 3 places right: $0.00165 = 1.65 \times 10^{-3}$

Step3: Match with options

The result matches option G.

Answer:

G. $1.65 \times 10^{-3}$