# Chapter 13: Exponents and powers

Contents

Very large numbers, for example 1685742300000 are difficult to read, understand and compare. To make these numbers easier to read, understand and compare, we use exponents.

7 exercises available

Here we will get to know what exponents are through various examples.

In this topic we will understand the laws which govern the way in which exponents behave under different combinations of multiplication and division of powers and bases and simplify problems.

Writing numbers in the expanded form, as '10a + b' or '100a + 10b + c'.

Scientists and engineers often deal with super huge numbers like 6,000,000,000,000,000,000,000 and super small numbers like 0.0000000000532. How can they do this without tiring their hands out? How can they look at a number and understand how large or small it is without counting the digits? The answer to both questions: scientific notation.