Addition Of Numbers Close To Multiple Of 10

This topic for learn substraction of those numbers which are near to Multiple of 10.

Numbers, which are near to multiple of 10, are rounded off. For example if the number is 48 then it is rounded off to 50. i.e. (50-2)

Let’s take an example so you can easily understand.

Trick 1:

62 + 48

60 + 2 + (50 – 2)

60 +  50 + 2 – 2

110

So the final answer is: 110.

Trick 2:

(60+2) + 48

60 + 2 + 40 + 8

60 + 40 + 2 + 8

100 + 10

So the final answer is: 110



Another Method Of Addition For Large Number Addition

Let’s try it for 2345 + 5678 + 8901 + 7654. Click Here

Addition Ticks And Tips

Addition is the most frequently used in mathematics.

Here are 2 shortcut tricks & tips for addition which can be useful in aptitude test or objective test.

This shortcuts is very useful for mental calculation.

Addition of the numbers which are close to multiple of 10. ( 2 Digit Number Addition Trick e.g. 19,39,49,79 etc )

Addition by double column trick. ( 3 Digit Or 4 Digit Number Addition Trick e.g 335, 577, 2345, 5678 etc.)

Addition By Double Column Method - For 4 Digit & 4 Number Addition Shortcuts

This trick is used to add big numbers which are greater than two digits.

Let’s study this trick by using an example.
Let’s assume we want to add 335 and 577.

First step is to divide these numbers in double column.
 3     3 5
 5     7 7


Second step is  add right most column.
Here 35 + 77. So we can add it using 2 digit number addition trick like 35 + (70 + 7)

This gives us 105 + 7.  And finally answer 112.
But this is for 2 column (two digits) only.


Tird Step is Left most ‘1’ is carried forward and ‘12’ is last two digits of the answer.
So now we have

   1
   3     3  5
+ 5     7  7
   ---------
   9     1  2

Final Answer  912




Another Example With Four Digit and Four Number Addition

Let’s try it for 2345 + 5678 + 8901 + 7654. Click Here

Another Example With Four Digit and Four Number Addition Trick

Another Example With Four Digit and Four Number Addition
Let’s try it for 2345 + 5678 + 8901 + 7654.

First Step Divide them into double column like previous example for adding 3 digit number.

   2 3    4 5

+ 5 6    7 8

+ 8 9    0 1

+ 7 6    5 4
------------

Third step is  add right most column.

      1

   2 3    4 5                   Second Step

+ 5 6    7 8                   (80 - 2) + 45 = 123 

+ 8 9    0 1                   123 + 01 = 124

+ 7 6    5 4                   124 + (50+4) =178
-------------------------------------------------

2 4 5    7 8                   1 is carried over

                                     1 + 23 = 24
                                    (20 + 4) + 56 = 80  

                                     80 + (90-1) = 169

                                   (170 -1) + (70 +6) = 245

And finally answer 24578.

Subtraction Of Numbers Close To Multiple Of 10

This topic for learn addition of those numbers which are near to Multiple of 10.

This tricks can be applied to any number.

Let’s take an example so you can easily understand.

Trick 1:

66 - 38

66 - (40 – 2)

66 - 40 + 2

26 + 2

Addtion of 2 in any number is very easy.

So the final answer is: 28.