Which prefix represents one million?

Which prefix represents one million?

• A. k, 1,000
• B. M, 1,000,000
• C. μ, 1,000,000
• D. G, 1,000,000

Answer: (B)

Understanding how SI prefixes scale numbers helps you read and write large quantities quickly. One million is represented by the prefix mega, abbreviated M, which stands for 10^6. So the symbol M multiplies the unit by one million. Other prefixes shown correspond to different powers of ten: kilo (k) is 10^3, micro (μ) is 10^-6, and giga (G) is 10^9, so they do not equal one million. A handy reminder: uppercase M is mega, while lowercase m is milli (10^-3).

Understanding how SI prefixes scale numbers helps you read and write large quantities quickly. One million is represented by the prefix mega, abbreviated M, which stands for 10^6. So the symbol M multiplies the unit by one million. Other prefixes shown correspond to different powers of ten: kilo (k) is 10^3, micro (μ) is 10^-6, and giga (G) is 10^9, so they do not equal one million. A handy reminder: uppercase M is mega, while lowercase m is milli (10^-3).