When you will know this awesome trick, then you will be able to perform the multiplication of two 2-digit numbers easily without using a calculator. Let's understand how to perform this by taking the example 31 x 12.

• Multiply the ones digit vertically

                                         

• Multiplying in a cross pattern and adding the results.

                                         

• Multiplying the tens digit vertically.

This is how one can calculate the product of two 2-digit numbers easily. 

Important Note :-

If while performing the second step, cross multiplication and addition, the results appears to be two-digit number take carry the 10's digit and add it to step 3. Example

 in 34 * 34 the second step would result in 24 so 2 will be carried and added to step 3.

Try some problems on your own.

• 34*34
• 23*12
• 10*17