shortcut to find square root very fast of any number

Math Short Tricks 0 Comments

Find square root related question ask number of time in banking exam, company placement exams , management related exams and other competitive exams .If you want to clear the any competitive exams so quickly solve the maximum question in limited or short time with fast speed and find the correct answer. Now we are write the short trick for find square root and used for four or five digit perfect squares. You can use this trick for all compitetive exams like that IBPS PO, IBPS Clerk, SBI Clerk, RRB PO Clerk, SBI PO and SBI Associate exams, CAT, MAT EXAM and more

 

write this table first

Write the last number of square 1 to 9

for example  1^{2} = 1 9^{2} =81 So in case write last number is 1

2^{2} =4, 8^{2}= 64 , So in case write last number is 4

write up to 5

 

1 9 1
2 8 4
3 7 9
4 6 6
5 5

 

 

2\sqrt{1521}

1521=

Step 1 :select the last 2 digits and check the last number 1 and compare with top table so

last number 1 match with 1 ,9

1

9

Step 2 : And now find the nearest square for remaining numbers 15

15 nearest square is  3^{2} = 9, 4^{2}=16

So always select the smallest square number so in 9

Now write 31, 39

Note This is a not correct but this is a idea for square root number

Ans : 39

 

 

2\sqrt{12544}

12544= 

last number 4 = 2 and 8

125 nearest square is 11 = 121

Ans guess idea is  112, 118

So main Answer is 112

 

 

 

 

 


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