Multiplication by 11 Best Tricks 2023

Multiplication by 11 can be done using a simple mental trick. This method works for any two-digit number, and it involves creating a new two-digit number by adding the digits of the original number together and placing the result in the middle. Here’s how it works:

Let’s use “ab” to represent the two-digit number you want to multiply by 11, where ‘a’ is the tens digit and ‘b’ is the units digit.

Step 1: Add the digits ‘a’ and ‘b’ together. Step 2: Place the result of the sum from Step 1 in the middle of the original number. Step 3: That’s it! The new number is your answer.

Here’s the process explained with an example:

Let’s multiply 11 by 45. a = 4 (the tens digit of 45) b = 5 (the units digit of 45)

Step 1: 4 + 5 = 9 Step 2: Place 9 in the middle of 4 and 5: 495

So, 11 multiplication by 45 is 495.

Let’s try another example:

Let’s multiply 11 by 67. a = 6 (the tens digit of 67) b = 7 (the units digit of 67)

Step 1: 6 + 7 = 13 Step 2: Place 13 in the middle of 6 and 7: 737

So, 11 multiplied by 67 is 737.

You can apply this method to any two-digit number to quickly perform multiplication by 11 without the need for a calculator.

Multiplication any two-digit number by 11

Multiplication any two-digit number by 11 is a straightforward process that only requires basic arithmetic skills. The result of multiplying a two-digit number by 11 is a three-digit number. To understand the process, let’s take an example using the number 11 and a two-digit number, say 32.

Step 1: Write down the two-digit number (32).

Step 2: Add the two digits of the two-digit number (3 + 2 = 5).

Step 3: Place the result (5) between the two digits of the original number (3__2).

Step 4: That’s it! The result of multiplying 11 by 32 is 352.

Let’s try another example with the number 45:

Step 1: Write down the two-digit number (45).

Step 2: Add the two digits of the two-digit number (4 + 5 = 9).

Step 3: Place the result (9) between the two digits of the original number (4__5).

Step 4: The result of multiplying 11 by 45 is 495.

This method works for any two-digit number.

This method works for any two-digit number. Remember that if the addition of the two digits results in a number greater than 9, you need to carry over the tens digit. For example, if you want to multiply 11 by 78:

Step 1: Write down the two-digit number (78).

Step 2: Add the two digits of the two-digit number (7 + 8 = 15).

Step 3: Place the last digit of the result (5) between the two digits of the original number (7_8).

Step 4: Carry over the tens digit (1) and add it to the first digit of the original number (7 + 1 = 8).

Step 5: The result of Multiplication 11 by 78 is 858.

The method remains the same regardless of the two-digit number you use. With a little practice, you can easily multiply any two-digit number by 11 mentally.

Multiplication by 11 is a simple process

Multiplication by 11 is a simple process that can be understood with just a few words: To multiply any two-digit number by 11, add the two digits together and place the sum between the original digits.

Multiplication by 11 For a more detailed explanation, consider the following steps:

1. Take any two-digit number to be multiplication by 11, let’s call it “ab”, where ‘a’ is the tens digit and ‘b’ is the ones digit.
2. To find the result, add ‘a’ and ‘b’ together: a + b = c.
3. Now, place the sum ‘c’ between the original digits ‘a’ and ‘b’ to get the final answer: “acb”.

Here are some examples to illustrate the process:

Example 1: Let’s multiply 11 by 11: a = 1 (tens digit) b = 1 (ones digit) c = a + b = 1 + 1 = 2 The result is 121.

Example 2: Multiplying 34 by 11: a = 3 (tens digit) b = 4 (ones digit) c = a + b = 3 + 4 = 7 The result is 374.

Example 3: Multiply 87 by 11: a = 8 (tens digit) b = 7 (ones digit) c = a + b = 8 + 7 = 15 The result is 857.

In summary, when multiplication by 11 a two-digit number by 11, you add the two digits together and place the sum between the original digits to get the final answer.

Multiplication Best Examples