# Multiply Two Numbers Using Split and Merge Method

In this post, we will multiply two numbers using split and merge method which will speed up your calculation in IBPS PO, SSC CGL Exams

In exams such as SBI PO, IBPS PO and SSC CGL Exams, where time is a huge constraint, multiplying two numbers via split and merge method will help you find the solution in the least amount of time. Learning this split and merge method will help you improve your calculation speed and thus it will help you save time in competitive exams.

### Regular Method to multiply two numbers

Question: What is the product of 23 x 12?

Solution:
Step 1:
The regular method to solve this question is to write both the numbers one below the other on a sheet of paper using a pen. As soon as we write the numbers, we multiply 2 with 3 and 2 and then followed by 1 with 3 and 2 to obtain the product, as given below
Though this method is simple, but it is time- consuming. During IBPS PO and SS CGL Exams, you can’t afford to spend about 10 seconds on a simple calculation,t which is actually just a part of the question, not even a question in itself. Though the regular method involves one step, but it’s a whole lot of calculations.
Split and Merge Method to multiply two numbers

This split and merge method is the most time-saving method to multiply two numbers if one practices it and get this trick up, on his sleeve. This method involves splitting one number and merging the calculation.

Question: What is the product of 23 x 12?

Solution:
Step1:
Split 23 as 20 + 3

Step 2:
Multiply the two split numbers with 12 and then add the calculation as given below,

All this calculation can be easily done in the mind and you need not write all the steps one by one on a sheet of paper and waste time.

This question can also be solved by splitting 12 and merging the calculation with 23 as given below,
Multiply two digits using Formula
Question: What is the product of 23 x 17?

Solution:
Step 1:
This question can be solved using
(a+ b) (a - b) = a² - b²
The number 23 can be written as 20 + 3 and the number 17 can be written as 20 - 3.

Step 2:
(20 + 3) (20 - 3) = 20² - 3² = 202 - 32
= 391
Learn split and merge method to multiply two numbers with our best faculty.

Now try your hands on this couple of questions.

1. 5 x 240 = ?
1) 1230  2)4200  3)1725  4)1200  5)None of these

2. 25 x 124 = ?
1)1230   2)3100   3)1725   4)1200   5)None of these