# HOW TO FIND UNIT DIGIT OF SQUARE

## About "How to find unit digit of square"

How to find unit digit of square ?

Here we are going to see how to find unit digit of a squares.

To obtain square of a number, we have to multiply that number by itself, or multiply the same number two times.

Without doing actual multiplication, we may find the unit digit of the square of a number.For that, first we have to consider the unit digit of the given number.

Let us look into the example given below to understand the above concept.

Example 1 :

Write down the unit digit of the following number:

782

Solution :

782  =  78  78

To do actual multiplication, first we have to multiply the unit digit 8 and 8.

The unit digit of the product 8 and 8 will be the answer of unit digit of 782

So, we have 8  8 = 64

Here 4 is the unit digit of the product.

Hence 4 is the unit digit of the number 782.

Example 2 :

Write down the unit digit of the following number:

272

Solution :

272  =  27  27

To do actual multiplication, first we have to multiply the unit digit 7 and 7.

The unit digit of the product 7 and 7 will be unit digit of 272

So, we have 7  7 = 49

Here 9 is the unit digit of the product.

Hence 9 is the unit digit of the number 272.

Example 3 :

Write down the unit digit of the following number:

412

Solution :

412  =  41  41

To do actual multiplication, first we have to multiply the unit digit 1 and 1.

The unit digit of the product 1 and 1 will be the unit digit of 412

So, we have 1  1 = 1

Here 1 is the unit digit of the product.

Hence 1 is the unit digit of the number 412.

Example 5 :

Write down the unit digit of the following number:

352

Solution :

352  =  35  35

To do actual multiplication, first we have to multiply the unit digit 5 and 5.

The unit digit of the product 5 and 5 will be the unit digit of 352

So, we have 5  5 = 25

Here 5 is the unit digit of the product.

Hence 5 is the unit digit of the number 352. After having gone through the stuff given above, we hope that the students would have understood "How to find unit digit of square"

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