Decimal Addition and subtraction problems in Competitive exams

Decimal_Additions_and_subtractions
Decimal Problems
In competitive exams, most of the problems come from additions and subtractions. In the previous posts, we have understood how to solve addition and subtraction problems. Now we are going to solve decimal problems. 

Decimal problems are very easy to solve. Candidates must understand the easy method for solving the decimal problems.
As seen in the picture an example has been given. By going to solve the decimal problem, some of the candidates may make mistakes since the lack of knowledge on the decimals.

After the identification of decimal, fill a zero in order to equal the digits without affecting the value of the numbers.  Observe as shown in the last of the decimal picture. Don't use paperwork. Anon-mathematical background student can also solve the decimal calculations by following the steps.

How to solve decimal additions and subtraction problems in a single attempt in competitive exams?

Understanding the decimal problems with additions and subtractions are very difficult. When solving decimal problems, fill zeros in missing digits in the numbers. Otherwise, a little confuse will arise. 

A shortcut method helps to solve by speed and accuracy!

Example I: 58.68 + 67.8 + 8.978 = ?

Step I: 

In the example, find the digits after the decimals and fill zeros to the missed digits in the numbers.  

58.680 + 67.800 + 08.978 = 135.458

Now all numbers have the equal digits.

Add all the numbers, which we have practiced in the previous post of additions.

Example II: 58.68 + 67.8 - 8.978 = ? 

Step I:
In the example, find the digits after the decimals and fill zeros to the missed digits in the numbers.

58.680 + 67.800 - 08.978 = 117.502

Now all numbers have the equal digits.

The result of adding first and second numbers, subtract from the third number, which we have practiced in the previous post of subtraction.


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