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Last updated on May 26th, 2025

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Multiples of 20

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In math, multiples are the products we get while multiplying a number with other numbers. Multiples play a key role in construction and design, counting groups of items, sharing resources equally, and managing time effectively. In this topic, we will learn the essential concepts of multiples of 20.

Multiples of 20 for Thai Students
Professor Greenline from BrightChamps

What are the Multiples of 20?

Now, let us learn more about multiples of 20. Multiples of 20 are the numbers you get when you multiply 20 by any whole number, including zero. Each number has an infinite number of multiples, including a multiple of itself. In multiplication, a multiple of 20 can be denoted as 20 × n, where ‘n’ represents any whole number (0, 1, 2, 3,…). So, we can summarize that:

Multiple of a number = Number × Any whole number

For example, multiplying 20 × 1 will give us 20 as the product. Multiples of 20 will be larger or equal to 20.Multiples of 20

Professor Greenline from BrightChamps

List of First 20 Multiples of 20

Multiples of 20 include the products of 20 and an integer. Multiples of 20 are divisible by 20 evenly. The first few multiples of 20 are given below:

 

TABLE OF 20 (1-10)

20 x 1 = 20

20 x 6 = 120

20 x 2 = 40

20 x 7 = 140

20 x 3 = 60

20 x 8 = 160

20 x 4 = 80

20 x 9 = 180

20 x 5 = 100

20 x 10 = 200

 

TABLE OF 20 (11-20)

20 x 11 = 220

20 x 16 = 320

20 x 12 = 240

20 x 17 = 340

20 x 13 = 260

20 x 18 = 360

20 x 14 = 280

20 x 19 = 380

20 x 15 = 300

20 x 20 = 400

Now, we know the first few multiples of 20. They are 0, 20, 40, 60, 80, 100, 120, 140, 160, 180, 200,...

Professor Greenline from BrightChamps

Operations with Multiples of 20

Understanding the multiples of 20 helps solve mathematical problems and boosts our multiplication and division skills. When working with multiples of 20, we need to apply it to different mathematical operations such as addition, subtraction, multiplication, and division.

 

Sum of first 5 Multiples of 20:


20, 40, 60, 80, and 100 are the first five multiples of 20. When multiplying 20 from 1 to 5, we get these numbers as the products.  
So, the sum of these multiples is:


20 + 40 + 60 + 80 + 100 = 300


When we add the first 5 multiples of 20, the answer will be 300.

 

Subtraction of first 5 Multiples of 20:


While we do subtraction, it improves our comprehension of how the value decreases when each multiple is subtracted from the previous one. 20, 40, 60, 80, and 100 are the first five multiples of 20. So, let us calculate it as given below:


20 - 40 = -20
-20 - 60 = -80
-80 - 80 = -160
-160 - 100 = -260


Hence, the result of subtracting the first 5 multiples of 20 is -260.

 

Average of first 5 Multiples of 20:


To calculate the average, we need to identify the sum of the first 5 multiples of 20, and then divide it by the count, i.e., 5. Because there are 5 multiples presented in the calculation. Averaging helps us to understand the concepts of central tendencies and other values. We know the sum of the first 5 multiples of 20 is 300.


20 + 40 + 60 + 80 + 100 = 300


Next, divide the sum by 5:


300 ÷ 5 = 60


60 is the average of the first 5 multiples of 20.

 

Product of First 5 Multiples of 20:


The product of given numbers is the result of multiplying all of them together. Here, the first 5 multiples of 20 include: 20, 40, 60, 80, and 100. Now, the product of these numbers is:


20 × 40 × 60 × 80 × 100 = 38,400,000

 

The product of the first 5 multiples of 20 is 38,400,000.

 

Division of First 5 Multiples of 20:

 

While we perform division, we get to know how many times 20 can fit into each of the given multiples. 20, 40, 60, 80, and 100 are the first 5 multiples of 20.


20 ÷ 20 = 1
40 ÷ 20 = 2
60 ÷ 20 = 3
80 ÷ 20 = 4
100 ÷ 20 = 5    

The results of dividing the first 5 multiples of 20 are: 1, 2, 3, 4, and 5.

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Common Mistakes and How to Avoid Them in Multiples of 20

While working with multiples of 20, we make common mistakes. Identifying these errors and understanding how to avoid them can be helpful. Below are some frequent mistakes and tips to avoid them:

Mistake 1

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Confusing Multiples with Factors

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Sometimes, students get confused between the multiples and factors of 20. A simple trick to differentiate between the two is to remember that multiples are the products of multiplication, while factors are the divisors of the number. Multiples of 20 refer to the products we get while multiplying 20 with other numbers. For example, multiples of 20 include 0, 20, 40, 60, 80, 100, 120, 140, 160, 180, 200….


The factors of 20 are 1, 2, 4, 5, 10, and 20. When 20 is divided by these numbers, the remainder will be zero. These are the factors of 20 meaning that these numbers can divide 20 without any remainder.

 

Factors of 20:
20 ÷ 1 = 20
20 ÷ 2 = 10
20 ÷ 4 = 5
20 ÷ 5 = 4
20 ÷ 10 = 2
20 ÷ 20 = 1

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Multiples of 20 Examples

Ray, the Character from BrightChamps Explaining Math Concepts
Max, the Girl Character from BrightChamps

Problem 1

Lila is organizing a charity event where each sponsor donates packs of water bottles. Each pack contains 20 bottles. If 5 sponsors each donate one pack every month for 3 months, how many bottles will they have altogether?

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300 bottles

Explanation

Each sponsor donates 20 bottles per pack. With 5 sponsors, the total number of bottles per month is 20 × 5 = 100. Over 3 months, this becomes:

 

100 × 3 = 300

 

They will have 300 bottles altogether.

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Max, the Girl Character from BrightChamps

Problem 2

A local bakery bakes batches of cookies, with each batch containing 20 cookies. Over a week, they bake the first three multiples of 20 batches. How many cookies do they bake by the end of the week?

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1200 cookies

Explanation

The first three multiples of 20 are 20, 40, and 60. To find the total number of cookies baked:

 

20 × 1 = 20  
20 × 2 = 40  
20 × 3 = 60  

 

Adding these gives the total number of batches: 20 + 40 + 60 = 120. Since each batch has 10 cookies:

 

120 × 10 = 1200

 

The bakery bakes 1200 cookies by the end of the week.

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Max, the Girl Character from BrightChamps

Problem 3

In a community center, there are 20 tables. During an event, each table is set up with 20 chairs. How many chairs are there in total?

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400 chairs

Explanation

To find the total number of chairs, multiply the number of tables by the number of chairs per table:

 

Number of tables = 20  
Number of chairs per table = 20

 

20 × 20 = 400

 

Therefore, there are a total of 400 chairs in the community center.

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Max, the Girl Character from BrightChamps

Problem 4

Ben is creating gift bags for a party. He prepares 4 rows of gift bags, with each row containing 20 bags. How many gift bags does he have in total?

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

80 gift bags

Explanation

To find the total number of gift bags, multiply the number of rows by the number of bags in each row:

 

Number of rows = 4  
Number of bags per row = 20  

 

4 × 20 = 80

 

So, Ben has 80 gift bags in total.

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Max, the Girl Character from BrightChamps

Problem 5

Clara is stacking her art supplies. She places 20 pencils in the first container, 40 in the second, and 60 in the third. How many pencils are there in all three containers?

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

120 pencils

Explanation

The first container has 20 pencils, the second has 40, and the third has 60. Adding these gives:

 

20 + 40 + 60 = 120

 

Therefore, there are a total of 120 pencils in all three containers.

Max from BrightChamps Praising Clear Math Explanations
Ray Thinking Deeply About Math Problems

FAQs on Multiples of 20

1.How do you find the multiples of 20?

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2.What is the LCM of 15 and 20?

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3.What are the real-life applications of Multiples of 20?

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4.Are multiples of 20 finite or infinite?

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5.Is there any odd multiples of 20?

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6.How can poems help children in Thailand memorize the Multiplication Table and Multiples of 20?

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7.Can learning the Multiplication Table influence creativity in solving Multiples of 20 challenges for kids in Thailand?

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8.How do language and cultural differences in Thailand affect the way children learn the Multiplication Table and Multiples of 20?

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9.What role does brain development play in mastering the Multiplication Table and Multiples of 20 among early learners in Thailand?

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Professor Greenline from BrightChamps

Important Glossaries for Multiples of 20

  • Multiple: A multiple represents the product of a number that may be multiplied by an integer. For example, multiples of 20 include 20, 40, 60, 80, etc.
     
  • Number pattern: This refers to how numbers are listed. It should follow a certain sequence. Multiples of 20 are the numbers that consist of the number pattern of 20.
     
  • Even number: An even number refers to any number that can be divisible by 2 without leaving any remainder. The last digits of even numbers are 0, 2, 4, 6, or 8. All multiples of 20 are even numbers.
     
  • Divisor: It refers to any number by which another number can be divided without leaving any remainder. 1, 2, 4, 5, 10, and 20 are the divisors of 20.
     
  • Least Common Multiple (LCM): The smallest common multiple of two or more numbers. For example, the LCM of 15 and 20 is 60.
Professor Greenline from BrightChamps

About BrightChamps in Thailand

At BrightChamps, multiplication tables represent more than just numbers—they open doors to numerous opportunities! Our goal is to help children all over Thailand acquire important math skills, focusing today on the Multiples of 20 with a special focus on multiples—in a lively, enjoyable, and accessible way. Whether your child is measuring the speed of a roller coaster at Dream World, tracking scores at a local football match, or managing their allowance to buy the latest gadgets, mastering multiplication tables gives them the confidence needed for everyday life. Our interactive lessons are created to make learning both easy and fun. Since kids in Thailand learn in various ways, we customize our approach to fit each child’s style. From Bangkok’s bustling streets to Phuket’s tropical islands, BrightChamps brings math to life, making it engaging and exciting throughout Thailand. Let’s make multiples a fun part of every child’s learning experience!
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Seyed Ali Fathima S

About the Author

Seyed Ali Fathima S a math expert with nearly 5 years of experience as a math teacher. From an engineer to a math teacher, shows her passion for math and teaching. She is a calculator queen, who loves tables and she turns tables to puzzles and songs.

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Max, the Girl Character from BrightChamps

Fun Fact

: She has songs for each table which helps her to remember the tables

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