How to solve Addition and Subtraction problem in the single attempt?

Addition_and_Subtraction_Combine
Additions and Subtractions

Solving problems of additions and subtractions separately are very easy. Some problems are containing additions and subtraction combine. These problems are very tough to solve in a single attempt. By splitting solving of addition and subtraction problems will take a lot of time. Without implementing the BODMAS rules, the result will not be sure.  You can find in the picture what is correct method to solving problems in a speedy way in competitive exams.


BODMAS rules should implement to solve this Addition and subtraction problem. What are the BODMAS Rules?. BODMAS stands for Bracket, Of, Division, Multiplication, Addition and Subtraction. By applying the BODMAS rules, simplification of the problems will be done in an easy way. 

The candidates should solve addition & subtraction problem in a single attempt. Do not split and not do two times. While doing Addition & Subtraction problems, don't use paperwork.

For Example:

7652 - 3216 - 2215 = ?

Step I: 7652 - 3216 - 2215 =        1

Add the last digit of the last number with the last digit of the second number and subtract the result digit with the last digit of the first number. 

i.e. 5 + 6 = 11
Keep 1 in mind for further calculations.
The result 1. Subtract 1 from the last digit of the first number.
2-1= 1
Write 1 as final answer digit.
Step II: 7652 - 3216 - 2215 =       21

Add the second digit of the last number with the second digit of the second number and  add 1 which is in mind.
i.e.  1 + 1 = 2
2  + 1 = 3 (1 is from the previous calculation)
The result is 3. Subtract 3 with the second digit of the first number.
5 - 3 = 2
Write 2 as final answer second digit.

Step III: 7652 - 3216 - 2215 =     221

Add the third digit of the last number with the third digit of the second number.  The result 4 subtract from the third digit of the first number.

i.e. 2 + 2 = 4
The result is 4.
Subtract 4 from the third digit of the first number.
6-4 = 2.
Write 2 as final answer third digit.

 Step  IV: 7652 - 3216 - 2215 = 2221

Add the fourth digit of the last number with the fourth digit of the second number. The result 5 subtract from the fourth digit of the first number.

i.e. 3 + 2 = 5
The result is 5.
 Subtract 5 from the fourth digit of the first number.
7-5 = 2
Write 2 as final answer fourth digit.

The answer for the problem is 7652 - 3216 - 2215 = 2221.


Practice:

  • ? - 26871 - 36141 = 18420
  • 81432 - ? - 36141 = 18420
  • 81432 - 26871 - ? = 18420
  • 81432 - 26871 - 36141 = ?
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