VADIC MATHS - FIRST LESSON

after getting a good response about vadic maths here is the very first lesson about this.
before starting let me tell you again that its not gona be a cup of tea but yes, we can do this all together.

keeping in mind that "practice makes a man perfect and writting makes a man exact"
we will start our very first lesson.

ok the very first thing we will discuss is squaring a number ending with 5

ok let begin with this (you must be knowing that 5 square is 25 ) ;)

step one: take a number ending with 5.

say, 45.

step two: write the ten's and unit's number 25 without thinking much.

so you have xxxxx25 (doesnt matter how many digits before 25)

step three: take the remaining number before 5 from the original number

in this case its 4

step four: add 1 to this number(step 3) and multiply the number with the number of step three.

means (4+1) X 4 = 20

step 5 : simply put this number(step 4) in front of step 2's 25

means 20 25

and thats your answer 2025

you dont even need a calculator.

now we will try this formula for some more numbers...

lets take 25.....

----- xxxxx25
------ (2+1)X2 = 6
--------- 625

thats the square of 25 :)

lets do this for a bigger number say, 85

------- xxxxx25
------- (8+1)X8 = 72
------- 7225
thats the answer

you can use the same formula for ever number ending with 5.

and now the homework comes......

you should learn the tables.... i know you have done a lot of them in school but its time to revise them

learn from 1X20 to 30X20 or atleast till 20X20

this will help when you solve three and four digit numbers...

let us know if you like this lesson coz this lesson is just the begining and we will do many more

:)