Maths Trick

MATHS TRICKS

dear friends i m just going to tell you some of the tricks that you can use to do the maths
sums easily or can teach your child about that which will prove to be lot helpful .plz pay
attention they are extremely useful .

TO FIND THE SQUARE OF A NUMBER

first of all dear friends the most easiest thing is to find the square of a number having 5

in the end like 25,65,125,675 etc.

lets find out the square of 15

by simple maths we do 15 * 15=225

now lets see the trick

15 is made up of two numbers i.e. 1 and 5

the square of 5 as we all know is 25

and then take the first number here it is 1 and multiply it with the next number i.e. 2

what we get is 1* 2=2

put both the results together

and get the answer 225

square of 45

5*5=25

4*5=20

2025 (answer)

square of 75

5*5=25

7*8=56

5625 (answer)

square of 105

5*5=25

10*11=110

11025 (answer)

trick to find the square of any number upto 99.

lets find out square of 36

firstly,add the two digit number with the second digit

i.e. 36+6=42

then multiply the first digit of two digit number to the result obtained

i.e. 42*3=126

now take the square of second digit of two digit number

i.e. 6*6=36

and finally add the numbers in such a way that the first digit of above result

comes below the last digit of second last result

i.e. 126
+ 36
-------
1296

this is the final result : 1296

and in the same manner we can find the square of any number from 1 to 99.

thanx all hope it helped you .