UrbanPro
true

Take Class I-V Tuition from the Best Tutors

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

Search in

Easiest way to find Squares of adjacent numbers

Debraj Paul
30/03/2017 0 0

Here is the easiest way to find squares of adjacent numbers

12 * 12 = 144
13 * 13 = 144 + 12 + 13
14 * 14 = 144 + 12 + 13 + 13 + 14.
...........................
59 * 59 = (60 * 60) - 60 - 59 = 3600 - 60 - 59=3481
58 * 58 = 3600 - 60 - 59 - 59 - 58 = 3364
........................
Squares of any number ending with 5 can be find out using Antyayor Dasakepi.
eg: 15 * 15 = 1 * 2|25 = 225 (multiply the number in the tenth place with the next number).
25 * 25 = 2 * 3|25 = 625
35 * 35 = 3 * 4|25 = 1225
75 * 75 = 7 * 8|25 = 5625

So, by regular practicing the above two methods, squares of any 2-digit number can be calculated mentally and in seconds.

0 Dislike
Follow 0

Please Enter a comment

Submit

Other Lessons for You

Commerce: How to express it in interviews?
Most of the Commerce Students when go to give an interview are generally faced with a very common question; as to "What is Commerce?" Now, it is not something we don't know specially after becoming graduate...

Lines and angles
a) Segment: A part of line with two end points is called a line-segment. A line segment is denoted by AB and its length is is denoted by AB. (b) Ray: A part of a line with one end-point is called a ray....

Fill in the blanks with suitable prepositions
1. The cat jumped _______ the fence. 2. He walked ______ his mother. 3. The cake was shared _____ both boys. 4. We saw him standing ____ the door. 5. She sat ____ the table. 6. Mother was angry ____...
A

Chemical Properties of Transition Elements
These elements vary widely in their chemical properties .They are mostly electropositive to get dissolve in mineral acids,with exception of few (Au,Ag).They react with number of non metals like oxygen,nitrogen,halogens...

Square Of a Number Ending In 5
Let's say we want to get the square of 35 i,e 35 x 35, Take the first no ie 3,take the next number i,e 4, Multiply 3 and 4 ie 3 x 4 = 12, Place 25 after 12, So, the answer is 1225, Lets try some more, 75...
X

Looking for Class I-V Tuition Classes?

The best tutors for Class I-V Tuition Classes are on UrbanPro

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

Take Class I-V Tuition with the Best Tutors

The best Tutors for Class I-V 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