Squaring 3 digit numbers

Let take 114, as the number: 
Step 1: In 114, add 14 to 114. We get 128.
Step 2: Now, calculate the square of 14 i.e 196. 
Step 3: we need to combine 128 and 196
See how to do it.
Step 4: Add first digit of 196 to 128 i.e 128 + 1= 129.
Step 5: put last two digit at the end. 
Answer is 12996.
If you get the answer of step 2 in 4 digits then add first 2 digit in step 4.

Make a simple division

Now you can divide a 3-digit or 4-digit number by 5 without making lot of calculations. Just follow these simple steps to reach the right answer.

Dividing large no. By 5 is very simple. All you have to do is multiply the no. by 2 and move it to one decimal point.
Example 1. 195/5
Step 1. 195 × 2 = 390 
Step 2. Now move the decimal at ones place, i.e 39.0
Answer is 39

Example 2. 2978/5
Step 1. 2978 × 2 = 5956
Step 2. Again move the decimal at ones place, 
595.6
Answer is 595.