10^-24. For base units without prefixes, use, Divide the initial power of 10 by the final power of 10. Sorry, your blog cannot share posts by email. indent Using a pocket calculator with an exponent key, usually labeled EX or EE or EX, the number: 4.3 x 10 5 is entered as 4.3 EX 5. E. 10 18. Prefix: Symbol: x from 10 x: Number: yotta: Y: 24: 1,000,000,000,000,000,000,000,000: zetta: Z: 21: 1,000,000,000,000,000,000,000: exa: E: 18: 1,000,000,000,000,000,000: peta: P: 15: 1,000,000,000,000,000: tera: T: 12: 1,000,000,000,000: giga: G: 9: 1,000,000,000: mega: M: 6: 1,000,000: kilo: k: 3: 1,000: hecto: h: 2: 100: deca: da: 1: 10: base: 0: 1: deci: d-1: 0.1: centi: c-2: 0.01: milli: m-3: … Try it risk-free for 30 days Try it risk-free Ask a question. These units are almost always seen in their base form, but they can use SI prefixes. Learn the prefixes as powers of ten. Those are rarely used except in specific fields of study. All SI units use the same prefixes, so once you learn them for units of length (metres), you already know how to use prefixes for units of mass (grams). Similar to the positive powers, the negative power of 10 related to a short scale name can be determined based on its Latin name-prefix using the following formula: History and origin of kilo, mega and more. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/53\/Convert-Units-With-Prefixes-Step-1-Version-2.jpg\/v4-460px-Convert-Units-With-Prefixes-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/5\/53\/Convert-Units-With-Prefixes-Step-1-Version-2.jpg\/aid2165816-v4-728px-Convert-Units-With-Prefixes-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"