The multiples of 9 are obtained by multiplying integers with 9. In this section, we will learn about the multiples of 9. For more details about multiples, see our page “Multiples of a Number“.

Table of Contents

## What are Multiples of 9?

A number is called a multiple of 9 if it is completely divisible by 9 with the remainder zero.

For example, 9 divides 18 completely, so by the definition 18 is a multiple of 9. Similarly, 9, 18, 27, 36, 90, 900, etc. are all examples of multiples of 9 as they are completely divisible 9.

Remark: From the above definition, it is clear that any multiple of 9 can be written as 9n for some integer n. So the set of multiples of 9 is given by

{9n: n is an integer}

## First 10 Multiples of 9

The first 10 multiples of 9 are as follows:

9×1=9 | 9×2=18 |

9×3=27 | 9×4=36 |

9×5=45 | 9×6=54 |

9×7=63 | 9×8=72 |

9×9=81 | 9×10=90 |

So we have:

The first 10 multiples of 9 are 9, 18, 27, 36, 45, 54, 63, 72, 81 and 90. |

**Also Read:**

**Question:** What are the first ten multiples of 9?

**Video Solution:**

## First 20 Multiples of 9

The first 20 multiples of 9 are given below:

9×1=9 | 9×2=18 |

9×3=27 | 9×4=36 |

9×5=45 | 9×6=54 |

9×7=63 | 9×8=72 |

9×9=81 | 9×10=90 |

9×11=99 | 9×12=108 |

9×13=117 | 9×14=126 |

9×15=135 | 9×16=144 |

9×17=153 | 9×18=162 |

9×19=171 | 9×20=180 |

So we have:

The first 20 multiples of 9 are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135, 144, 153, 162, 171, and 180. |

## FAQs on Multiples of 9

**Q1: Write first five multiples of 9.**

Answer: The first five multiples of 9 are 9, 18, 27, 36, and 45.

**Q2: What is the sum of first five multiples of 9?**

Answer: The sum of the first five multiples of 9 is 9+18+27+36+45 = 135.

This article is written by Dr. T. Mandal, Ph.D in Mathematics. On Mathstoon.com you will find Maths from very basic level to advanced level. Thanks for visiting.