## Shortcut to multiply any 2 digit number by 15

Another amazing way to multiply a 2 digit number by 15. I especially love to use this trick when the given number is easily divisible by 2.

Lets now go through the steps

**Step 1:**Find half of the given number.

**Step 2:**Now add the given number and the result obtained in step 1.

**Step 3:**Multiply the result obtained in step 2 by 10.

Now let us consider a few examples to understand better

**Example 1: 12 x 15 = ?**

**Step 1:**We find that half of the number is

12 /2 = 6

**Step 2: **Adding the given number and the result obtained in step 1

we get 12 + 6 = 18

**Step 3:**Multiplying the result obtained in step 2 by 10

we get 180

**Ans 12 x 15 = 180**

**Example 2:48 x 15 = ?**

**Step 1:**We find that half of the number is

48 /2 = 24

**Step 2: **Adding the given number and the result obtained in step 1

we get 48 + 24 = 72

**Step 3:Placing zero next to step 2 **

we get 720

**Ans 48 x 15 = 720**

Now you try applying this trick to multiply 25, 72 ,43,57 by 15 in secs