Math Addition Trick for Adding Two Digit Numbers

This math addition trick helps you in adding 2 two-digit numbers mentally without using paper and pen.

Adding Two Digit Numbers Trick

Let us begin with the basic method of adding two numbers

Take the example of 71 + 69

This is the usual method which we do with the help of pen and paper

Are you interested to do these calculations mentally?

If your answer is yes,then read below to learn the trick.


Trick:

In addition, adding 10 to a two digit number is easy as we just need to increase the digit in the tenth place by 1. 12 + 10 is 22,34 + 10 is 44 and so on.

We use the same rule while adding any two numbers.To be clear, see how 71 and 69 is added


Method 1:

Step 1:

71 + 69 can be written as 71 + 70 -1

In this step, 69 is split as 70 and 1


Step 2:

Addition of 71 + 70 is easy which gives 141 ie 71 + 70 = 141

Now subtract 1 from 141 ie 141 - 1 = 140.

This gives the answer i.e. 71 + 69 = 140


Method 2:

Alternatively, the below method can also be used.The choice of method depends on the numbers that are added

Step 1:

71 + 69 can be written as 71 + 60 + 9

In this step, 69 is split as 60 and 9


Step 2:

Addition of 71 + 60 is easy which gives 131 ie 71 + 60 = 131

Now add 9 to 131 ie 131 + 9 = 140.

This gives the answer i.e. 71 + 69 = 140

When you practice this, you can increase the speed and improve your addition skills.Try some practice questions

Practice Questions

1.19+26=?

2.31+39=?

3.14+45=?

4.11+79=?

This math addition trick helps you in adding 2 two-digit numbers mentally without using paper and pen.

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Adding two digit numbers is made easier with this math addition trick.


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