Tricks for Square Root

Trick 1. 

Square root for 21904:
Number     Split as
21904        219 | 04
Split the number keeping the last 2 digits aside

< 219 <

Choose the smaller number (14) as 1st Part
If the square ends in 1 4 9 6 5 0
The no. would end in 1,9 2,8 3,7 4,6 5 0
Choose 8 as 219 is closer to 225 ( ) than 196 ( )
14      |        8
Ans. 148

Trick 2. 

Square root for 20164:
Number     Split as
20164        201 | 64
Split the number keeping the last 2 digits aside
< 201 <
Choose the smaller number (14) as 1st Part
If the square ends in 1 4 9 6 5 0
The no. would end in 1,9 2,8 3,7 4,6 5 0
Choose 2 as 201 is closer to 196 ( ) than 225 ( )
      14     |    2
Ans. 142

Trick 3.

Square root for 143641:
Number       Split as
143641       1436 | 41
Split the number keeping the last 2 digits aside
< 1436 <
If the square ends in 1 4 9 6 5 0
The no. would end in 1,9 2,8 3,7 4,6 5 0
Choose 9 as 1436 is closer to 1444 ( ) than 1369 ( )
37      |        9
Ans. 379

Trick 4. 

Square root for 69169:
Number      Split as
69169        691 | 69
Split the number keeping the last 2 digits aside
< 219 <
Choose the smaller number (26) as 1st Part
If the square ends in 1 4 9 6 5 0
The no. would end in 1,9 2,8 3,7 4,6 5 0
Choose 3 as 691 is closer to 676 ( ) than 729 ( )
26     |      3
Ans. 263

Try out some Square Examples for 

24964, 51984, 94249, 18769
Suggested Books: View here
Tricks for Square Root Tricks for Square Root Reviewed by Jasleen Behl on Friday, April 04, 2014 Rating: 5

No comments:

I will try to respond asap