Which prefix denotes 10^6?

Which prefix denotes 10^6?

• A. 10^6
• B. 10^-6
• C. 10^3
• D. 10^-2

Answer: (A)

Metric prefixes denote powers of ten. The one for a factor of one million is mega-, written with the symbol M. So 10^6 corresponds to mega-. The other powers in the options map to different prefixes: 10^3 is kilo-, 10^-3 is milli-, and 10^-6 is micro-. Knowing these mappings lets you read and convert measurements quickly.

Metric prefixes denote powers of ten. The one for a factor of one million is mega-, written with the symbol M. So 10^6 corresponds to mega-. The other powers in the options map to different prefixes: 10^3 is kilo-, 10^-3 is milli-, and 10^-6 is micro-. Knowing these mappings lets you read and convert measurements quickly.