Understanding multiplication is a fundamental math skill that students learn early on in their education. While most people are familiar with the basics of multiplication, such as the times tables up to 10, as numbers get larger, the calculations can become more complex. In this article, we will delve into mastering the multiplication tables from 11 to 20. By breaking down the patterns and strategies for these higher numbers, you can improve your speed and accuracy in multiplication, which is crucial for various mathematical problems and real-life applications.
The 11 Times Table
Multiplying numbers by 11 follows a simple pattern. To multiply a number by 11, you can duplicate the digit and place it between the original digits. For example:
- 11 x 3 = 33
- 11 x 7 = 77
- 11 x 9 = 99
This pattern continues as you move up the multiplication table.
The 12 Times Table
Multiplying by 12 can be tackled in several ways. One method is doubling the number and then adding another set of the original number. For instance:
- 12 x 5 = 10 x 2 = 20, then add another 5 = 60
- 12 x 8 = 10 x 2 = 20, then add another 8 = 96
The 13 Times Table
When you reach the 13 times table, you can use a combination of addition and multiplication strategies. For example:
- 13 x 4 = (10 x 4) + (3 x 4) = 40 + 12 = 52
- 13 x 7 = (10 x 7) + (3 x 7) = 70 + 21 = 91
The 14 and 15 Times Tables
The 14 and 15 times tables can be simplified by breaking down the numbers into easier multiplication facts. For instance:
- 14 x 6 = 7 x 2 x 3 = 14 x 3 = 42
- 15 x 9 = 5 x 3 x 3 = 15 x 3 = 45
The 16 and 17 Times Tables
The 16 and 17 times tables can be approached by applying known multiplication facts and patterns. For example:
- 16 x 6 = 2 x 8 x 3 = 16 x 3 = 48
- 17 x 5 = 10 x 5 + 7 x 5 = 50 + 35 = 85
The 18 and 19 Times Tables
Multiplying numbers by 18 and 19 can be simplified by utilizing the distributive property and known multiplication facts:
- 18 x 7 = (10 x 7) + (8 x 7) = 70 + 56 = 126
- 19 x 4 = (10 x 4) + (9 x 4) = 40 + 36 = 76
The 20 Times Table
The 20 times table is relatively straightforward, as it often involves multiplying by powers of 10 and then halving the result. For example:
- 20 x 8 = 10 x 8 x 2 = 80 x 2 = 160
- 20 x 12 = 10 x 12 x 2 = 120 x 2 = 240
By understanding the patterns and strategies for multiplying numbers by 11 to 20, you can improve your mental math skills and computation speed. Practice these multiplication tables regularly to enhance your math fluency and confidence.
FAQs:
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How can I best memorize the 11-20 times tables?
To memorize the 11-20 times tables effectively, practice regularly, use mnemonic devices, and focus on understanding the patterns behind each multiplication table. -
What are the benefits of mastering the 11-20 times tables?
Mastering the 11-20 times tables can improve your mental math skills, enhance problem-solving abilities, and boost overall mathematical proficiency. -
Are there any online resources or tools to help practice the 11-20 times tables?
Yes, there are numerous websites, apps, and games designed specifically to help students practice and master multiplication tables, including the 11-20 times tables. -
How can I help my child learn the 11-20 times tables effectively?
Encourage your child to practice regularly, provide them with multiplication worksheets, use flashcards, and make learning fun through games and interactive activities. -
Why are the 11-20 times tables important to learn?
The 11-20 times tables are essential for more advanced mathematical calculations, such as division, fractions, algebra, and various real-life problem-solving scenarios.