Dear Frnds
After discusss many techniques for find square ,Now we explain how yor get perfect square root in very lesser time.
What is perfect square – If any number square end with last no.1,4,5,6,9 known as perfect square.
So we can find square root of any perfect square quickly by technique-—
Method-
First we understand all perfect square last digit 5 numbers ie
1. 4. 5. 6. 9
| | | | |
Square
of no. 1 ,9. 2 , 8. 5. 4, 6 3,7
Example – Find value of √9801.
√9801 =——
STEP1:
write with pair last 2 digit = √98|01
|
Last 2 digit Square of = 1 , 9
STEP2:
=√98|01
|
Find nearest square 10,9
Square of 10=100
Square of 9 =81
Note :we always take lesser square value no.
Here lesser value is 81 and his no is 9
STEP 3:
Now possibile no.-
91
And. 99
STEP4:
Now compare with No. End 5. Square ie 95
( 95)²=9025
9025 is less than given no.9801
So Square of no 99 is 9801
Ans is √9801=99
Example 2 -Find value √44944