What Are The First 5 Multiples Of 9

What Are the First 5 Multiples of 9? A Simple Explanation

Meta Description: Learn what multiples are and discover the first five multiples of 9 easily. This guide provides a clear explanation perfect for beginners in math.

Understanding multiples is a fundamental concept in mathematics. A multiple of a number is the product of that number and any whole number. In simpler terms, it's the result you get when you multiply a number by 1, 2, 3, and so on. This article will specifically explore the first five multiples of 9.

What are Multiples?

Before diving into the multiples of 9, let's solidify the understanding of what a multiple is. A multiple is the result of multiplying a number by an integer (a whole number). For example:

• Multiples of 2: 2, 4, 6, 8, 10, and so on (2 x 1, 2 x 2, 2 x 3, etc.)
• Multiples of 5: 5, 10, 15, 20, 25, and so on (5 x 1, 5 x 2, 5 x 3, etc.)

Calculating the First Five Multiples of 9

Now, let's focus on the number 9. To find its multiples, we simply multiply 9 by consecutive whole numbers, starting from 1. Here's how we get the first five multiples:

1. 9 x 1 = 9 This is the first multiple of 9.
2. 9 x 2 = 18 This is the second multiple of 9.
3. 9 x 3 = 27 This is the third multiple of 9.
4. 9 x 4 = 36 This is the fourth multiple of 9.
5. 9 x 5 = 45 This is the fifth multiple of 9.

Therefore, the first five multiples of 9 are 9, 18, 27, 36, and 45.

Identifying Multiples of 9: A Quick Trick

There's a handy trick to quickly check if a number is a multiple of 9. Add up the digits of the number. If the sum of the digits is divisible by 9, then the original number is also divisible by 9. Let's try it with some of our multiples:

• 18: 1 + 8 = 9 (divisible by 9)
• 27: 2 + 7 = 9 (divisible by 9)
• 36: 3 + 6 = 9 (divisible by 9)
• 45: 4 + 5 = 9 (divisible by 9)

This trick works because of the divisibility rule for 9.

Conclusion: Mastering Multiples

Understanding multiples is crucial for various mathematical operations. This guide has provided a clear explanation of how to find multiples, specifically focusing on the first five multiples of 9. Remember the simple method of multiplying 9 by consecutive whole numbers, and you'll master this concept in no time! Practice identifying multiples of 9 using the digit sum trick – it will significantly improve your number sense.