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Easy Math Tricks - Squaring number ending with 5

Nikhil Chandra Gayam
24/12/2019 0 0

Have you felt that squaring a number is the tedious process? Well, not at least for numbers ending with 5. Here I present a simple trick which helps you calculate the squares of 2 digit and 3 digit numbers ending with 5 within seconds. Let's get into the trick!!

Let's start with easy number 15 all of you know the square of 15 is 225. 

Here 15 has two digits which are 1 and 5 

There are three simple steps  in this trick

Step 1:

Add 1 to number apart from last digit 5 here it is 1.

1+1=2

Step 2:

Now multiply 1 with the result 2

1*2=2

Step 3:

Now we know 52 =25

Just attach the number obtained in step 2 with 25 which is 225

And it's done!

 For clear understanding let's take another example

75

Step 1:

7+1=8

Step 2:

7*8=56

Step 3:

Attach 56 with 25 which is 5625

752 =5625

Very Simple right and you can use this principle for all numbers ending with 5

Let's take a 3 digit number 105

Step 1:

10+1=11

Step 2:

10*11=110

Step 3:

Attach 110 with 25 which is 11025

1052=11025

I hope the concept is clear by now, Ask me if you have doubts.

Happy Learning!

 

 

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