Table of 21 - Multiplication Table of 21

Multiplication table of 21, or 21 times table, includes the multiples of 21. Here, the results are obtained by multiplying 21 with any natural number starting from 1. Generally, the multiplication table gives us the value of the repeated addition of numbers. Similarly, the 21 times table also gives us the value of repeated addition of the number 21. 

For example, 4 bunches of 21 flowers each gives the sum of 21  + 21 + 21 + 21 = 84. Here, the total number of flowers in all the 4 bunches are 84. This can also be written as 21 4  = 84.  Here, 4 is the total number of bunches and 21 is the number of flowers in each bunch. 

21 Times Table from 1 to 10

Short Tricks to Memorise Multiplication Table of 21

Memorising the 21 times table becomes easy with this short trick.

• One way to help kids to learn table 21 is to ask them to recite the table loudly so that it remains in their memory for a longer period of time. The easiest way to grasp the table of 21 is to know the fact that when 21 is added to itself repeatedly, the resultant value will also be the multiple of 21. For example, 21 2 is the same as 21 + 21.

• To understand the second trick, you need to observe the number pattern and you will get to know how to write and memorise the table of 21.

21 1 = 21

21 2 = 42

21 3 = 63

21 4 = 84

21 5 = 105

21 6 = 126

21 7 = 147

21 8 = 168

21 9 = 189

21 10 = 210

Now, if you look at the unit digit of the product in the table of 21 from 1 to 9, you will observe that the unit digit is the same as the whole number by which the number 21 is multiplied by. Therefore, the pattern followed is 1, 2, 3, 4, 5, 6, 7, 8, and 9.

Also, if you look at the ten’s digits of the product in the table of 21 from 1 to 9, you will observe that these are the first 9 multiples of 2. Therefore, the pattern followed in the ten's digits is 2, 4, 6, 8, 10, 12, 14, 16, and 18.

21 when multiplied by 10 gives the product 210. 

Let’s look at some of the questions based on the 21 times table.

21 Times Table Solved questions

In this section, we are going to solve a few questions that can appear in the form of word problems, multiple choice, or numericals.

Word Problems on Table 21 with Practice Questions

1. Amit goes for a swim 2 hours a day and 21 days in a month. How many total hours does he spend on swimming in a month?

Solution:  

Total number of days he goes for swimming in a month = 21 

Number of hours he spends on swimming in a day = 2 

Total hours he spends on swimming in a month = 21 2 = 42

Therefore, the total hours Amit spends on swimming in a month is 42.

2. Mr. Roy walks 13 miles a week. Find out how many miles he jogged in 21 weeks?

Solution:

Mr. Roy jogs 13 miles in a week. 

Using the 21 times table, we will find out the total miles he walks in 21 weeks.

That is 21 13 = 273

Therefore, Mr. Roy walks 273 miles in 21 weeks.

21 Times Table Practice Questions 

Get your hands on the following practice questions to understand the table of 21 concepts precisely.

1. Find out 21 times 7 plus 5 minus 2.

Ans 1:  150 

2. Sony distributes 4 chocolates to each student on her birthday. Find out how many total chocolates she distributes to 21 students in her class?

Ans: 84 chocolate

MCQ  Based on 21 Times Table with Practice Questions

1. Using the table of 21, find out 21 times 3 plus 13 minus 4?

1. 71

2. 72

3. 73

4. 74

Ans:  (b) 

21 3 + 13 - 4 = 63 + 13 - 4 = 72 

Practice Questions

1. If a child eats 10 eggs in a day, find out how many total eggs he eats in 21 days using the table of 21.

1. 208

2. 209

3. 210

4. 211

Ans: C

Table Chart of 21 from 11 to 20

To keep the multiple of 21 on your tips, it is useful if you can remember the table from 11 to 20 as well. Refer to the image given below, the same is provided in the PDF, which can be easily downloaded and printed.

How to Read the 21 Times Table?

There is a way to read multiplication tables. Here, we will learn to read the table of 21 using the below chart. Reading a table again and again can become a new rhyme/song for the kids which they recite daily in the morning or play on their devices.

Learning the multiplication table of 21 may become easy if you understand the trick and pattern the table follows using this article. However, if you can precisely memorise the multiplication table of 21, you will be able to solve complex mathematical problems easily and in no time.