# How to Find, Say & Write Multiples of 5

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• 0:01 Multiples of 5
• 0:41 Finding Them
• 1:55 Saying & Writing Them
• 2:50 Lesson Summary

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Lesson Transcript
Instructor: Yuanxin (Amy) Yang Alcocer

Amy has a master's degree in secondary education and has taught math at a public charter high school.

In this video lesson, you will learn how to find your multiples of 5. You will know how to easily say and write the numbers you get when you multiply a number by 5.

## Multiples of 5

All of your numbers that you get when you multiply by 5 are called multiples of 5. Knowing these multiples of 5 will help you when you need to answer a multiplication-by-5 problem. These types of problems are actually pretty common on math tests, and you might even come across these in your daily life. For example, if you have a group of 5 people, and you want to figure out how much you all have in total if you each have \$20, you will need to multiply the \$20 by 5 to find your answer. If you are familiar with your multiples of 5, you will be able to quickly figure out your answer. Let's get going to see how to find the multiples of 5.

## Finding Them

To find your multiples of 5, you can begin by thinking about what multiplication is. If you think of multiplication as repeated addition, then you can think about multiplication by 5 as addition problems where you keep adding a 5 to your previous number.

So, if you started with 0, your next number then is 0 + 5 = 5. How many 5s have you added? 1. So this is 5 * 1. Your next number is 5 + 5 = 10. This is 5 * 2. Next comes 5 * 3, which is 10 + 5 = 15. 5 * 4 then is 15 + 5 = 20. Do you notice a pattern beginning? Yes, the last digit alternates between 0 and 5.

• 5 * 1 = 5
• 5 * 2 = 10
• 5 * 3 = 15
• 5 * 4 = 20
• 5 * 5 = 25

So, just start counting and increase your number each time by 5. You can identify multiples of 5 by just looking at the last digit. If it is a 0 or a 5, then you are looking at a multiple of 5.

## Saying & Writing Them

Saying the multiples of 5 is as easy as saying any regular numbers. So, 5 is 'five.' 10 is 'ten.' 15 is 'fifteen.' 20 is 'twenty.' And so on. What comes after 'twenty?' 'Twenty-five.'

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