Question

units of measurement assessment 2025x
round 1000 to two sig figs
1000.
1.0 x 10^3
10
10 x 10^2

Explanation:

Step1: Recall significant - figures rules

Significant figures include all non - zero digits and zeros between non - zero digits. For whole numbers without a decimal point, trailing zeros may or may not be significant. To express a number with a specific number of significant figures, scientific notation is often used.

Step2: Express 1000 with two sig - figs

In scientific notation, $1000$ written with two significant figures is $1.0\times 10^{3}$. The number $1000.$ has four significant figures, $10$ has two significant figures but is not equivalent to 1000, and $10\times 10^{2}$ is not in proper scientific - notation (the coefficient should be between 1 and 10).

Answer:

B. $1.0\times 10^{3}$