Conversions in the metric system typically involve multiplying or dividing by powers of what?

• A. 1
• B. 10
• C. 100
• D. 1000

Answer: (B)

In the metric system, conversions between different units typically involve multiplying or dividing by powers of ten. This systematic approach is a key feature of the metric system, making calculations simpler and more straightforward. For instance, converting from meters to kilometers requires dividing by 1,000 (or multiplying by 0.001), and converting from millimeters to centimeters requires multiplying by 10.

This base-10 structure allows for easy mathematical manipulation and helps ensure accuracy when making conversions. The other choices, while they include numbers that serve specific purposes in certain contexts, do not capture the fundamental principle of the metric system's reliance on base ten for conversions.