What is annexing with zeros?

Annexing with zeros refers to a mathematical technique used in operations such as addition or multiplication, particularly when dealing with larger numbers. It involves appending zeros to a number to simplify calculations or to align numbers for easier arithmetic. For example, when multiplying 20 by 3, one can think of it as 2 (the significant part) multiplied by 3, and then appending a zero to the result, yielding 60. This method streamlines calculations and helps maintain clarity when working with larger figures.