Squaring Two Digit Number

*SIMPLE METHOD OF SQUARING a 2-digit-number ENDING in 5*

15² =?   95² =?   105² =?
85² =?   65² =?    75² = ?

15² means 15x15 = 225
But we can do it FASTER and EASIER even without using CALCULATOR

DO YOU KNOW you can get ALL the answers in less than a minute, YES!!! YOU YOURSELF, without using a CALCULATOR. And I mean it when I say LESS THAN A MINUTE

A. 15² =  225  *HOW?*
Method:  step 1: (first digit (1) x the number that is one more than it (2) ) i.e. 1 x 2 = *2*
step 2: Just add _25_ at the back of the answer in step 1 above making *2*_25_ = *225*

B. 25² = *625*
Method: step 1: (first digit (2) x the number that is one more than it (3) ) i.e. 2 x 3 = 6
step 2: Just add 25 at the back,
making *6*_25_ = *625*

C. 65² = *42*_25_.
65² = *4225*
step 1: 6 x 7 = 42
step 2: Just add 25 = *4225*


D.    35²= *12* 25 = *1225*

Now you can try this;
55² = ________
75² = ________
85² = ________
95² = ________

Even if it is 3-digit
105²= 10 x 11 = *110* with 25 = *110* 25
= *11,025*

To see if your answers are RIGHT (or LEFT)
55² = *3025*
75² = *5625*
85² = *7225*
95² = *9025*

Whaooo How many did you get RIGHT?
ALL!!! Fantastic

You can also confirm with your calculator. O