1. Squaring Of A Number Whose Unit Digit Is 5
With this Vedic Math trick, you can quickly find the square of a two-digit number ending with 5.
CBSE or ICSE-whatever syllabus you follow, you will definitely come across such sums.
For example Find (55) ² =?
Step 1. 55 x 55 = . . 25 (end terms)
Step 2. 5x (5+1) = 30
So our answer will be 3025.
Well, if you have understood the process try to find the square of 75 & 95.
2. Multiply a Number By 5
Generally, you come across such calculations in ICSE/ CBSE exams or homework or while thinking mentally (JEE, KVPY, Olympiad & lot more) to solve a Math problem. Next time use this trick to save your time.
Take any number, and depending on its even or odd nature, divide the number by 2 (get half of the number).
Even Number:
2464 x 5 =?
Step 1. 2464 / 2 = 1232
Step 2. add 0
The answer will be 2464 x 5 = 12320
Odd Number:
3775 x 5
Step 1. Odd number; so ( 3775 - 1) / 2 = 1887
Step 2. As it is an odd number, so instead of 0 we will put 5
The answer will be 3775 x 5 = 18875
Time to check your knowledge:
Now try —- 1234 x 5, 123 x 5