**In this post, we will discuss tricks to solve addition and subtraction problems for integer and non-integers, without the use of pen and paper for IBPS PO Exam.**

No matter if it is IBPS PO Exam or any Competitive exam, addition and subtraction are the basic calculations that one needs to do while solving a problem. Solving addition and subtraction problems through the conventional method is time-consuming. It is a known fact that more than accuracy, speed is a major factor behind one's success in IBPS PO Exam.

In this post, we will discuss the smart method to solve addition and subtraction problems without the use of pen and paper which will help you to solve addition and subtraction problem quickly.

**Why it is important to calculate without Pen and Paper?**

Addition and subtraction, not only helps you to solve addition and subtraction problems but they also help you to solve the various different category of problems. One needs to speed up his or her calculations to solve problems in less time. So, in exams such as IBPS PO, it becomes important to calculate the sum or difference of two given numbers in the least time.

**Conventional Method to solve addition and subtraction problem**

**Conventional method to find the sum of two numbers**

**Question:**What is the sum of 1529 and 614?

**Solution:**

As soon as we read this question, we take a pen and paper, write down the two numbers, one below the other and start adding the digits from the units place to get the required solution. As given below,

**Conventional method to find the difference between two numbers**

**Question:**What is the difference between 972 and 563?

**Solution:**

**Step 1:**

As soon as we read the question, we take a pen and paper write the higher number on the top and the other number below and start subtracting from the units place to get the required solution. As given below,

Therefore, the difference between 972 and 563 is 409.

**Tricks to solve Addition and Subtraction Problems**

During the examination, every single second count. Solving addition and subtraction problems through conventional method consumes more than 15 seconds, as the first few seconds are taken to write the numbers on the sheet of paper. So, learn this simple addition and subtraction trick to save a lot of time while solving addition and subtraction problems in IBPS PO Exam.

**Question:**What is the sum of 1529 and 614?

**Solution:**

**Step 1:**

Divide the number in terms of hundreds, tens and ones.

1529 like 1500 + 20 + 9

1529 like 1500 + 20 + 9

614 like 600 + 10 + 4

**Step 2:**

Then add-

1500 + 20 + 9 + 600 + 10 + 4

2100 + 30 + 13

= 2143

Therefore, the sum of 1529 and 614 is 2143.

Breaking numbers based on their placement will help you add numbers faster and thus help you solve the addition and subtraction problem quickly.

**Question:**What is the difference between 972 and 563?

**Solution:**

**Step 1:**

Divide the Number in terms of hundreds, tens and ones.

972 as 900 + 72

562 as 400 + 62

**Step 2:**

Then subtract 900 - 400 and 72 - 62 and then add the difference of both the numbers as given below,

Therefore, the difference between 972 and 562 is 409.

**An example of Addition and Subtraction Problem**

**Question:**(6214 + 3689 + 1476) - (5213 + 1365 + 2038) = ?

**Solution:**

**Step 1:**

We need to first add all the units place 4 + 9 + 6 - 3 - 5 - 8 = 3

Then add all the digits in tens place 1 + 8 + 7 - 1 - 6 - 3 = 6

Then add all the digits in hundreds place 2 + 6 + 4 - 2 - 3 - 0 = 7

**Step 2:**Then add all the digits in tens place 1 + 8 + 7 - 1 - 6 - 3 = 6

**Step 3:**Then add all the digits in hundreds place 2 + 6 + 4 - 2 - 3 - 0 = 7

**Step 4:**
Then add all the digits in thousand place 6 + 3 + 1 - 5 - 1 - 2 = 2

**Step 5:**

By merging all the answers we get 3672.

Therefore,

(6214 + 3689 + 1476) - (5213 + 1365 + 2038) = 3672

Though this method appears to be lengthy, this is the simplest and the quickest way to solve a question. All the calculations can be done in mind with the use of paper and pen. It is a simple trick. If you practice this simple trick then you will be able to solve the questions within few seconds.

**An example of an Addition and Subtraction of Non-Integers**

**Question:**3.479 + 2.8143 - 6.21 + 8.32

**Conventional Method**

**Solution:**

**Step 1:**

As soon as we see this question, we take a pen and paper and write down all the numbers one below the other and start to calculate from right to left as given below-

**Smart method to solve Addition and Subtraction problems**

**Step 1:**

To solve the problem in a quick way for IBPS PO Exam, first, we need to balance the numbers by adding zeros at the end.

**Step 2:**

0 + 3 - 0 + 0 = 3

**Step 3:**

9 + 4 - 0 + 0 = 3

**Step 4:**

7 + 1 - 1 + 2 = 0 (as one is carried forward)

**Step 5:**

4 + 8 - 2 + 3 = 4 (as one is carried forward)

**Step 6:**

Now add all the integer numbers 3 + 2 - 6 + 8 = 8 ( as one is carried forward)

**Step 7:**

By merging all the numbers we get 8.4033

Therefore, 3.479 + 2.8143 - 6.21 + 8.32 = 8.4033

**Do write down in the comment section about how this simple trick helped you to improve your calculation speed.**

Stay tuned for our next post.

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