Square of 3-digit number which is near to multiple of 100
Lets say, we want to calculate the square of 608. The entire steps are illustrated in the following figure.
Steps for better understand:
Step 1: On Base 600, given number 608 is 8 more than 600. Add 8 and 608, the result is 616.
Step 2: Multiply 616 with base 6. The result is 3696. This is the 1st part of the answer. Which is left side part.
Step 3: Find the square of 8, the result is 64. This is the 2nd part of the answer.
The final answer is 369664
More examples to understand: