What Times Is 21

Introduction to Multiplication Tables

To find the answer to “What times is 21?”, we need to look at the multiplication tables. Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 times 4 can be represented as 3 + 3 + 3 + 3 = 12. In this case, we are looking for two numbers that, when multiplied together, give us 21.

Understanding the Question

The question “What times is 21?” is asking for the factors of 21. Factors are numbers that are multiplied together to get another number. To solve this, we can list the factors of 21:

• 1 x 21 = 21
• 3 x 7 = 21

So, the answer to “What times is 21?” can be either 1 times 21 or 3 times 7.

Importance of Multiplication Tables

Multiplication tables are essential in mathematics as they help in solving problems quickly. Knowing the multiplication tables can aid in:

• Speed and accuracy: By memorizing the multiplication tables, you can solve multiplication problems faster and with greater accuracy.
• Division: Understanding multiplication tables also helps in division, as division is the inverse operation of multiplication.
• Real-world applications: Multiplication is used in various real-world scenarios, such as calculating the area of a room, the cost of items, and more.

Learning Multiplication Tables

To learn multiplication tables, you can use various methods, including:

• Repetition: Repeat the tables several times until you memorize them.
• Flashcards: Create flashcards with the multiplication problem on one side and the answer on the other.
• Games and quizzes: Engage in games and quizzes that involve multiplication to make learning more enjoyable.

You can also use songs, rhymes, or create your own mnemonics to help you remember the tables.

Using Multiplication Tables to Solve Problems

Now that we know the factors of 21, let’s use this information to solve a problem. Suppose you have 3 groups of 7 items, and you want to find the total number of items. Using the multiplication table, you can calculate:

Number of Groups	Number of Items per Group	Total Number of Items
3	7	3 x 7 = 21

Therefore, the total number of items is 21.

📝 Note: Practice is key to becoming proficient in multiplication tables. The more you practice, the easier it becomes to solve problems.

To summarize, finding the answer to “What times is 21?” involves understanding multiplication tables and identifying the factors of 21. By knowing the multiplication tables, you can solve problems quickly and accurately, making it an essential skill in mathematics. The key points to remember are the factors of 21, the importance of multiplication tables, and the various methods to learn and use them to solve problems. Multiplication tables are a fundamental concept in mathematics that can be applied to various real-world scenarios, making them a crucial part of a strong mathematical foundation.