Squaring a 2- digit no. beginning with 9 Take a 2-digit number beginning with 9. Subtract it from 100. Subtract the difference from the original number: this is the first part of the answer. Square the difference: this is the last part of the answer. ? EXAMPLE If the number is 96 , subtract: 100 - 96 = 4, 96 - 4 = 92. The first part of the answer is 92 _ _ . Take the first difference (4) and square it: 4 × 4 = 16. The last part of the answer is _ _ 16. So 96 × 96 = 9216 .

Question

Squaring a 2- digit no. beginning with 9 Take a 2-digit number beginning with 9. Subtract it from 100. Subtract the difference from the original number: this is the first part of the answer. Square the difference: this is the last part of the answer. ? EXAMPLE If the number is 96 , subtract: 100 - 96 = 4, 96 - 4 = 92. The first part of the answer is 92 _ _ . Take the first difference (4) and square it: 4 &times; 4 = 16. The last part of the answer is _ _ 16. So 96 &times; 96 = 9216 .

Sumit Majumdar · Answer

Dear student,
You are perfectly correct, Let me tell you with another number:
a) Let the number be 94.
b) Subtract it from 100, we get: 6.
c) We subtract the difference from the original number i.e. 94-6=88.
d) Now we square the original difference, we get:
6 $\times$ 6=36
e) Hence, the required number is
8836.
Regards

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

Guest

Squaring a 2- digit no. beginning with 9

Take a 2-digit number beginning with 9.

Subtract it from 100.

Subtract the difference from the original number:
this is the first part of the answer.

Square the difference: this is the last part of the answer.

?

EXAMPLE

If the number is 96, subtract: 100 - 96 = 4, 96 - 4 = 92.

1 Answers

Think You Can Provide A Better Answer ?

Other Related Questions on Discuss with colleagues and IITians

ASK QUESTION

Answer and earn gift vouchers

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Complete Self Study Package designed by Industry Leading Experts

Live 1-1 coding classes to unleash the Creator in your Child

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Register Now & Win Upto 25% Scholorship

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

Guest

IIT JEE Courses

One Year IIT Programme

Two Year IIT Programme

Crash Course

NEET Courses

One Year NEET Programme

Two Year NEET Programme

One to One

School Board

Live Online classes

Class 11 & 12

Class 9 & 10

Class 6, 7 & 8

Test Series

JEE test series

NEET test series

C.B.S.E test series

Complete Self Study Packages

FULL COURSE

For class 12th

For class 11th

Squaring a 2- digit no. beginning with 9 Take a 2-digit number beginning with 9. Subtract it from 100. Subtract the difference from the original number: this is the first part of the answer. Square the difference: this is the last part of the answer. ? EXAMPLE