如何计算Scientific Notation

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Scientific notation expresses very large or very small numbers as a coefficient (1 ≤ a < 10) multiplied by a power of 10. It is essential in science and engineering where values span many orders of magnitude.

分步指南

1. 1Move the decimal point until you have a number between 1 and 10
2. 2Count the number of places moved — this becomes the exponent
3. 3If you moved left, the exponent is positive; if right, it is negative
4. 4Write as: a × 10ⁿ

例题解析