UrbanPro
true

Take Class 8 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Squaring numbers ending in 5..

Subhankar
15/12/2016 0 0

Solve the square of 25, in a jiffy.   Answer : 625

Another one: square of 35. Answer : 1225.

How it is done ?
25 x 25 . The last two digits of the product will always be 25 ( as 5 x 5 =25). The initial digits are obtained by multiplying 2  x 3 [ i.e. n (n+1) ].
Try it and see if you can square these numbers in a couple of seconds.
65, 75, 95.....

 

0 Dislike
Follow 0

Please Enter a comment

Submit

Other Lessons for You


Short note Spherical Mirror and uses
Spherical mirror is that mirror whose reflecting surface is a portion of a hallow sphere of glass. It is of two main types, concave mirror and convex mirro Concave Mirror:- A concave mirror is that spherical...

Tip to Parent
Hi parents, Since SA1 has completed for your childrens.You will be tensed to see there Answer scripts and Mark. Give a try,Insead of blasting them,tell ITS OK.I KNOW NEXT TIME YOU WILL SCORE GOOD MARKS. Definitely...

Easy ways to remember Periodic Table
You can easily remember the Periodic table by remembering some Hindi Mnemonics Group 1 is known as alkali metals. It includes Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Ru), Caesium (Cs), and...

Introduction to Algebraic Identities Part 1 for class 8
Introduction to Algebraic Identities Part 1:
X

Looking for Class 8 Tuition Classes?

The best tutors for Class 8 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 8 Tuition with the Best Tutors

The best Tutors for Class 8 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more