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 35 is ___________________ . | |||
| Right Option : A | |||
| View Explanation | |||
The square of 59 is _____________________ .
| |||
| Right Option : B | |||
| 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
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
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
7thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thAbout 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
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Prisha Gupta
8thMy 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
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
10thMy 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
7thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
