Did you know: there is a quicker way of solving questions with multiplication of 11 even if it is 345 multiply by 11? While the digit 1-9 is easy to multiply by 11, there is a math trick for any numbers that multiply by 11!

Eg:

1 x 11 = 11

2 x 11 = 22

3 x 11 = 33

4 x 11 = 44

5 x 11 = 55

6 x 11 = 66

7 x 11 = 77

8 x 11 = 88

9 x 11 = 99

10 x 11 = 110

So how do you solve any question with a number that multiply by 11?

EXAMPLE (2 digit number x 11): 63 X 11

Step 1: Add the two digits together

62 -> 6 + 3 = 9

Step 2: Split the two digits apart and place the new number (8) in the middle.

63 x 11 = 6 9 3

EXAMPLE ( 2 digit number x 11 with **carrying forward)**: 59 x 11

Step 1: Add the two digits together

59 -> 5 + 9 = 14

Step 2: Split the two digits apart and place the new number in the middle.

NOTE: in this case you need to carry the “1” to the 5 as there is only one blank in the middle to fill in the digit “4”

59 x 11 = 5 _ 9

= 6 4 9

Another example:

credits: student-tutor.com

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