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Banking Exam Preparation – ADDITION and SUBTRACTION Part I


Banking Exam Preparation – ADDITION and SUBTRACTION Part I

 

ADDITION:-

 

  • Add left to Right- 1

450+265+851+746 =?

 

Start addition from left.

Add 4+2+8+7= 21

We can reduce the number means 4+2=6 and 8+7=15

Then add 6+15=21

 

Now add 5+6+5+4=20

We can reduce as 5+5=10 and 6+4=10

Then 10+10=20

 

Now add 0+5+1+6=12

We can do this as 5+1=6

Then 6+6=12

 

Now unit digit of answer is 12 means 2 and carry forward 1 to next digit

Next digit is 20

Add carry forward digit means 1

20+1=21

Then new next digit is 21 means 1 and carry forward 2 to next digit

 

Next digit is 21

Add carry forward digit means 2

21+2=23

Then new next digit is 23

 

Our answer is 23 1 2 means 2312.

 

You can get answer by this method in less than 15 seconds by practice more and more.

 

Banking Exam Preparation – ADDITION and SUBTRACTION Part I

 

  • Add left to Right- 2

450+265+851+746 =?

 

Start addition from left.

Now we have to add digit place not only digit.

400+200+800+700=2100

 

Now add 10th digit place

50+60+50+40=200

 

Now add unit digit place

0+5+1+6=12

 

Add all of them

2100+200+12=2312

 

Our answer is 2312

 

Banking Exam Preparation – ADDITION and SUBTRACTION Part I

 

Group addition:-

Add a group of number which is in fixed sequence.

E.g. A – Add the number 33 to 41 means 33+34+35+36+37+38+39+40+41

E.g. B – Add the number 12 to 21 which are divide by 3 means 12+15+18+21

 

Note:-   1. This rule is always agree only addition series not subtraction series.

  1. Different between the numbers of series must be equal.

 

Step-

  1. Find the different between the numbers of the series. Different in e.g. A is 1 and e.g. B is 3.
  2. Find the total number of elements in the group. Elements in e.g. A are 9 and e.g. B are 4.

We and find number of element easily by this formula-

 

(Biggest number – smaller number + different between the numbers of the series) / Different between the numbers of the series

 

Biggest number means last number of the series.

Smaller number means first number of the series.

For e.g. A             (41-33+1)/1 = 9                 and

For e.g. B             (21-12+3)/3 = 4

  1. Now add first number and last number of series means smaller number and biggest number.

For e.g. A             33+41=74                             and

For e.g. B             12+21=33

  1. Multiply the result by the number of elements of group.

For e.g. A             74×9=666             or 74×9 and

For e.g. B             33×4=132             or 33×4

  1. Divide the result by 2.

For e.g. A             666/2=333           or 74×9/2=333   and

For e.g. B             132/2=66             or 33×4/2=66

These are our answer- 333 and 66.

You can get answer by this method in less than 15 seconds by practice more and more.

 

Banking Exam Preparation – ADDITION and SUBTRACTION Part I

 

Continue to “Banking Exam Preparation – ADDITION and SUBTRACTION- Part II”

 

Banking Exam Preparation – ADDITION and SUBTRACTION

You can also find

BANKING EXAM PREPARATION – CUBE AND CUBE ROOT

Banking Exam Preparation – ADDITION and SUBTRACTION- Part II

Banking Exam Preparation – “Square and Square Root”

Banking

 

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