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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?

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.