Now you’re ready to multiply any number with 9 in 3 sec.

28 X 9 = ?

From Step 2, we’ve to subtract 28 with 3 :

28 – 3 = **25**(this is your first part of your answer)

Now from Step 1, we’ve to multiply the unit place of 2**8** by 9 i.e. 8 X 9.

8 X 9 = 7**2** and we’ll take only unit place of answer i.e. 2

And, finally merge both step and your answer is

28 X 9 = 252

Let’s take one more example : 57 X 9 =?

5**7** – 6 = **51**

7 X 9 = 6**3**

57 X 9 = **513**

**Source**: Magic Multiply by 9 Trick – Mind Calculation in 3 sec

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