# How to Express Large and Small Numbers Using Scientific Notation

## What is scientific notation and how can it be used to express numbers?

Scientific notation is a way to express large or small numbers using the form [N × 10^n]. How can this be applied to solving equations?

## Scientific Notation Explained

Scientific notation is a method used to represent numbers in a simplified form by expressing them as a coefficient multiplied by a power of 10. For large numbers, the exponent will be positive, and for small numbers, the exponent will be negative. This makes it easier to work with extremely large or small values in calculations and comparisons.

Scientific notation serves as a convenient way to manage numbers that are either very large or very small. By using this notation, complex calculations involving these numbers can be simplified and understood more easily. To express a number in scientific notation, you need to represent it as a coefficient between 1 and 10 multiplied by a power of 10.

For example, the number 450,000 can be expressed in scientific notation as 4.5 × 10^5, where 4.5 is the coefficient and 5 is the exponent of 10. Similarly, the number 0.00025 can be represented as 2.5 × 10^-4, with 2.5 as the coefficient and -4 as the exponent of 10.

When solving equations involving scientific notation, it is important to ensure that all numbers are in the same form, meaning that the exponents of 10 should be consistent. By converting numbers to the same exponent form, calculations can be performed accurately, leading to the correct final answer.