What is approx.?

Approx. is an abbreviation of the word "approximately," meaning close to a certain figure or estimation. It is commonly used in contexts where exact figures are not known or are difficult to determine. Approximations can be made for a variety of numerical quantities, including time, distance, weight, and measurements. The use of approximations can help simplify calculations or provide rough estimates quickly in situations when exact values are not required. Approximation techniques are used extensively in mathematics, physics, and engineering, among other fields.