Square Of Number Ending With 5
Square Of Number Ending With 5
Rule 1: The square of a number of the form a5 (where a is tens digit and 5 is units digit) is the number which ends in 25 and has the number a(a+1) before 25 .
Rule 2: The square of a number of the form 5a (where a is units digit and 5 is tens digit) is equal to
i.e.
Rule 3: The square of a three digit number 5ab (where b is units digit and a is tens digit) is given by
Here ab stands for the number formed by the last two digits.
Rule 4:The square of a number abc...5(i.e. a number having 5 at unit's place is obtained by affixing 25 to the right of the number n(n+1),where n = abc...
Illustration: Find the square of 65.
Solution: The given number is 65 Hence it is of the form a5 where a = 6
So a(a+1) = 6(6+1) =6(7) = 42
Hence
Illustration: Find the square of 85.
Solution: The given number is 85 Hence it is of the form a5 where a = 8
So a(a+1) = 8(8+1) = 72
Hence
Illustration: Find the square of 125.
Solution: The given number is 125 Hence it is of the form a5 where a = 12
So a(a+1) = 12(13) = 156
Hence
Illustration: Find the square of 527.
The square of 514 and 525 is ______________________ . | |||
| Right Option : C | |||
| View Explanation | |||
Find the square of 524. | |||
| Right Option : A | |||
| View Explanation | |||
The square of 55 is _________________ . | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
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Cheshta
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
