Multiples of 21

What are multiples of 21?

Multiples of 21 are numbers that you get when you multiply 21 by whole numbers. These can be written as 21, 42, 63, and so on.

How to calculate multiples

To find the multiples of 21, multiply it by any whole number using this formula:

21 × n = multiple

Multiples of 21 Table (First 50)

n	21 × n	multiples
1	21×1	21
2	21×2	42
3	21×3	63
4	21×4	84
5	21×5	105
6	21×6	126
7	21×7	147
8	21×8	168
9	21×9	189
10	21×10	210
11	21×11	231
12	21×12	252
13	21×13	273
14	21×14	294
15	21×15	315
16	21×16	336
17	21×17	357
18	21×18	378
19	21×19	399
20	21×20	420
21	21×21	441
22	21×22	462
23	21×23	483
24	21×24	504
25	21×25	525
26	21×26	546
27	21×27	567
28	21×28	588
29	21×29	609
30	21×30	630
31	21×31	651
32	21×32	672
33	21×33	693
34	21×34	714
35	21×35	735
36	21×36	756
37	21×37	777
38	21×38	798
39	21×39	819
40	21×40	840
41	21×41	861
42	21×42	882
43	21×43	903
44	21×44	924
45	21×45	945
46	21×46	966
47	21×47	987
48	21×48	1008
49	21×49	1029
50	21×50	1050

Examples and Sample Calculations

Here are some common calculations for the multiples of 21, including practical examples of where you might see these values:

21 × 1 = 21: One unit of 21, such as packaging a single box with 21 items.
21 × 5 = 105: Imagine packaging 21 units in 5 boxes - the total number of units is 105.
21 × 12 = 252: In a business context, if you have 21 items in a monthly subscription model, over 12 months, you'll get 252 items total.

Interactive Calculation

Enter a number to multiply with 21:

21 x 1 = 21

Visualizing Multiples of 21

Here's a number line that shows the first few multiples of 21:

Multiples of 21 Number Line

Further Examples

21 × 20 = 420: When scaling up, such as in wholesale orders, 21 items × 20 batches equals 420.
21 × 100 = 2100: Large-scale production where 21 units are produced in 100 batches - a total of 2100 items.

Multiples of 21 calculations with remainders

Here are some examples of numbers and how they relate to multiples of 21, including calculations with remainders:

Number	Reason	Remainder
21	21 is a multiple of 21 because 21 × 1 = 21	0
42	42 is a multiple of 21 because 21 × 2 = 42	0
63	63 is a multiple of 21 because 21 × 3 = 63	0
84	84 is a multiple of 21 because 21 × 4 = 84	0
105	105 is a multiple of 21 because 21 × 5 = 105	0
126	126 is a multiple of 21 because 21 × 6 = 126	0
147	147 is a multiple of 21 because 21 × 7 = 147	0
168	168 is a multiple of 21 because 21 × 8 = 168	0
189	189 is a multiple of 21 because 21 × 9 = 189	0
210	210 is a multiple of 21 because 21 × 10 = 210	0
231	231 is a multiple of 21 because 21 × 11 = 231	0
252	252 is a multiple of 21 because 21 × 12 = 252	0
273	273 is a multiple of 21 because 21 × 13 = 273	0
294	294 is a multiple of 21 because 21 × 14 = 294	0
315	315 is a multiple of 21 because 21 × 15 = 315	0
336	336 is a multiple of 21 because 21 × 16 = 336	0
357	357 is a multiple of 21 because 21 × 17 = 357	0
378	378 is a multiple of 21 because 21 × 18 = 378	0
399	399 is a multiple of 21 because 21 × 19 = 399	0
420	420 is a multiple of 21 because 21 × 20 = 420	0

Read More About Multiples of 21

Table of 21

Important Notes:

Definition: Multiples of 21 are numbers that can be expressed as 21 times any integer (e.g., 21, 42, 63).
Sequence: The sequence of multiples of 21 begins with 21, 42, 63, and continues infinitely by adding 21 repeatedly.
Divisibility: Any multiple of 21 is divisible by both 21 and its factors.
Calculation: To find the nth multiple of 21, multiply 21 by n (e.g., the 5th multiple of 21 is 21 × 5 = 105).
Patterns: Multiples of 21 have certain patterns in their digits. The last digit of a multiple of 21 is usually 0 or 1.

Practical Examples of Multiples of 21:

Distance: The length of 960 meters can be seen as a multiple of 21 because 21 × 20 = 960.
Time: 720 minutes (or 12 hours) is a multiple of 21 because 21 × 15 = 720.
Weight: 240 pounds is a multiple of 21 because 21 × 5 = 240.

FAQs on Multiples of 21:

What is a multiple of 21? A multiple of 21 is any number that can be expressed as 21 times an integer. For example, 21, 42, and 63 are multiples of 21.
How do you find the multiples of 21? To find multiples of 21, multiply 21 by any whole number (integer). For example:
```
 21 × 1 = 21
```
```
 21 × 2 = 42
```
```
 21 × 3 = 63
```
Is 63 a multiple of 21? Yes, 63 is a multiple of 21 because 21 × 3 = 63.

Multiple Lists

Select how many multiples you want to see for 21 and view them in a simple format.