Multiples of 20
From a multiplication fact, we better understand what multiples are. We know that 4 × 20 = 80. This implies 80 is the 4th multiple of 20. Multiples of 20 are obtained basically by adding 20 as many times to get the answer you want. For example, 20 + 20 = 40 or 2 × 20 = 40.
 First five multiples of 20: 20, 40, 60, 80 and 100
 Prime Factorization of 20: 20 = 2 × 2 × 5
Let us explore more about the multiples of 20 and its properties.
1.  What are the Multiples of 20? 
2.  First 20 Multiples of 20 
3.  Important Notes 
4.  FAQs on Multiples of 20 
What are the Multiples of 20?
 Multiples of 20 are the product obtained by multiplying the numbers with 20.
 20 can be repeatedly added to get its successive multiples.
 The 15th multiple of 20 is 20 x 15 = 300. This list of multiples is neverending, we can generate infinite multiples of 20.
 The multiples of 20 are also the multiples of its factors. The factors of 20 are 1, 2, 4, 5, 10 and 20. 40 is the 2nd multiple of 20. 40 is also a multiple of 2, 4, 5, 10 and 20.
List of First 20 Multiples of 20
The first 20 multiples of 20 are obtained by multiplying 20 with each of the natural numbers from 1 to 20. Since multiplication is the repeated addition, once we find the first multiple, we can add 20 to it to get another multiple and we can keep adding 20 to get the successive multiples.
Multiples of 20 

20 × 1 = 20 
20 × 2 = 40 
20 × 3 = 60 
20 × 4 = 80 
20 × 5 = 100 
20 × 6 = 120 
20 ×7 = 140 
20×8 = 160 
20× 9 = 180 
20 × 10 = 200 
20 × 11 = 220 
20× 12 = 240 
20 ×13 = 260 
20× 14 = 280 
20 ×15 = 300 
20 ×16 = 320 
20 × 17 = 340 
20 ×18 = 360 
20 × 19 = 380 
20× 20 = 400 
To understand the concept of finding multiples, let us take a few more examples.
 Multiples of 10  The first five multiples of 10 are 10, 20, 30, 40, 50
 Multiples of 30  The first five multiples of 30 are 30, 60, 90, 120 and 150
 Multiples of 18  The first five multiples of 18 are 18, 36, 54, 72 and 90
 Multiples of 21 The first five multiples of 21 are 21, 42, 63, 84 and 105
 Multiples of 16  The first five multiples of 16 are 16, 32, 48, 64 and 80
Important Notes
 A number can have infinite multiples.
 20 is an even number, so its multiples will also be even.
 All the multiples of 20 will be the multiples of the factors of 20 as well.
Challenging Questions
 Oliver has 2000 notebooks. Can he group them in stack of 20 notebooks equally?
 Andrew wants to buy erasers and pencils. The store sells erasers in packs of 3 and the pencils in packs of 6. If he wishes to buy the same number of erasers and pencils, what is the minimum number of erasers can he buy?
Multiples of 20 Solved Examples

Example 1: Joe is fond of playing video games. There are certain rules of the game, that he is playing these days. After every level, one gets a credit of 20 points. On completing the 8^{th} level, how many points would he have scored?
Solution:
Credit gained after every level = 20 points
This implies, credit is gained after each level, and scores get added up in multiples of 20.
Credit gained at 8th level = 8 × 20= 160 points 
Example 2: Max and Williams, both attend music classes at the same music school. Max attends once every 6 days whereas Jack attends the same, once every 8 days. Also, there are days, when they meet, following their usual schedule. Suppose that they both met on 3^{rd}^{ }October, then on what date will they meet again?
Solution:
We have to find the first common multiple of 6 and 8 to solve our problem.
Multiples of 6 are 6, 12, 18, 24, 30, 36, 42, 48, ...
Multiples of 8 are 8, 16, 24, 32, 40, 48, 56, 64, ...
The common multiples of 6 and 8 are 24, 48, ...
The least common multiple of 6 and 8 is 24.Since they first met on 3^{rd} October, the date when they meet again for the next time is 3 + 24 = 27
FAQs on Multiples of 20
How do you find the 25th multiple of 20?
Multiply 20 by 25 and get the 25th multiple as 36 × 25 = 900
How can we say that 400 and 600 are the multiples of 20?
20 × 20 = 400 and 20 × 30 = 600. 20th multiple of 20 is 400 and 30th multiple of 20 is 600
What are the First Five Multiples of 20?
The first five multiples of 20 are 20, 40, 60, 80 and 100.
What 2 numbers give a multiple of 20?
Any number multiplied by 20 gives a multiple of 20. For example, 20 × 5 = 100 and it is a multiple of 20.
What are common multiples of 20 and 10?
The multiples of 20 are 20, 40, 60, 80, 100, 120, 140 and so on.
The multiples of 10 are 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 and so on.
The common multiples of 20 and 10 are 20, 40, 60, 80,100 and so on.
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